Reddit mentions: The best fish food

We found 1,277 Reddit comments discussing the best fish food. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 138 products and ranked them based on the amount of positive reactions they received. Here are the top 20.

6. Repashy Soilent Green 3 Oz JAR

Repashy Soilent Green 3 Oz JAR
Height3.7401574765 Inches
Length2.1653543285 Inches
Size3 Ounce (Pack of 1)
Weight0.1875 Pounds
Width2.1653543285 Inches
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🎓 Reddit experts on fish food

The comments and opinions expressed on this page are written exclusively by redditors. To provide you with the most relevant data, we sourced opinions from the most knowledgeable Reddit users based the total number of upvotes and downvotes received across comments on subreddits where fish food are discussed. For your reference and for the sake of transparency, here are the specialists whose opinions mattered the most in our ranking.
Total score: 2,879
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Top Reddit comments about Fish Food:

u/Ishikama · 9 pointsr/bettafish

Hello! Welcome to the wonderful world of betta keeping! I'm a bit late to the game, since this was posted a bit ago, and you've already recieved advice, but I'd like to offer up some as well.

As everyone has already said, it's a pretty big misconception for nearly all new betta keepers that bettas can be kept in small spaces without a filter or heater. This stems from the belief that bettas live in mud puddles, when it couldn't be further from the truth.

Bettas come from vast rice paddies, that will usually never dip below knee height and stretches for miles on end. In the dry season, the paddies do tend have lower water levels, but certainly not puddles. It's a densely planted ecosystem with moving water, and natural filters, ie. The plants and bacteria.

Since you're new to fish keeping (I assume, but apologies if I am wrong) you may not be aware of something called the "Nitrogen Cycle." While it may be confusing at first, essentially the beneficial bacteria that breaks down your fishes waste into ammonia, then nitrites, and then nitrates. This process is crucial for your fishes health and well being, and is very important in the fish keeping world, but I'll get into the specifics a bit more later in this comment.

While the "recommended" amount of space for a betta is commonly agreed to be 2.5 gallons, which is perfectly fine as a bare minimum, I would honestly not recommend such a small space for a beginner. This is because of the nitrogen cycle. I would go with a 5 gallon tank, or even a 10 gallon, which will be much easier to cycle and keep your fish much safer during the process.

As for the nitrogen cycle itself, the process happens on it's own, but you have to be the one to keep your fish safe during it. Basically, ammonia and nitrites are deadly to your fish, and for the first few weeks, these will be all too common. What your aiming for is the much safer, but still harmful in large quantities, and manageable nitrites at the end of the cycle.

The nitrogen cycle starts with the addition of ammonia into a new tank. This can be done in 2 ways, fish in or fish out. What you'll be doing is a fish in cycle. Beneficial bacteria will begin to grow in your tank to break down waste and convert them into the ammonia, nitrite, and nitrates. The bacteria grow on surfaces, such as decor, gravel, filter, heater, glass, and is NOT present in the water itself. This means that for the next few weeks, you gotta stay on top of your water change game.

50% water changes every other day for 2 weeks. 30% water changes every other day for 2 weeks. 40% water changes about every 3-4 days for a week. 30% water changes about once or twice a week at the end of the cycle. I know it seems like a lot, but your fish will appreciate it.

For more information on the Nitrogen Cycle, you can search it on google, and a helpful video to watch on it is KGTropicals youtube video "everything you need to know about the nitrogen cycle." They break it down so well and have more visual representations, so I definitely recommend it.

Some things to consider getting for your fish as well, and things that will help your cycle a TON. I'll be adding links for visual representation, as well as trying to find you the best prices I can.

  1. A good sized tank. I recommend a 5 or 10 gallon, much easier to start and keep a cycle in a bigger tank, but yes, 2.5 gallons is perfectly fine if you need it space wise. Be aware that even more water changes will be required to keep and maintain your tanks balance though.

    No links for this one since shipping a tank is a PAIN, but 5 and 10 gallon tanks can be bought from places like walmart, or local stores, or petsmart and Petco. I'm not sure if petco is still having their dollar per gallon sale, but a 10 gallon tank would only be $10.

  2. A good water conditioner. I recommend something like Seachem Prime or Neutral Regulator. These will remove any heavy metals, chlorine, and chlorimine from your water, AND detoxify ammonia, and nitrites for 48 hours. This is SO GOOD for keeping your fish happy and healthy during the cycling process.

  3. A good filter. Personally, sponge filters are the way to go. Easy, cheap, reliable. Most local fish stores will have the sponge filter itself, but they can also be ordered on Amazon. The other things needed would be airline tubing, and an airpump. The tubing and air pump can be bought even at big retailers like walmart or meijer and replaced easily sin e they're so readily available.

    To clean a sponge filter is the easiest thing. While your changing tank water, out some in a clean bucket, take your sponge filter out, put in bucket of removed tank water, squeeze sponge filter, put back in tank. It also holds an awesome amount of the good beneficial bacteria and will not lose it when you clean it, unlike changing cartridges for a hang on back filter. They also aerate the water, bringing more oxygen into it, and don't create a high flow that will tire your betta.

    Hang on back filters can be used too though, I just don't find them as reliable.

    Be sure to use a hang on back appropriate for your tank size. Bettas can tire easily of water flow is too high, and in some cases you may still need to baffle the filter.

  4. A good heater. Ideally, you want one you can adjust. Choose a heater for your tank size as well. Too small, won't keep water warm, too bug, could possibly cook your fish. That's never a good thing.

  5. A good food. The recommended I've seen so far is Northfin betta bits, or Fluval bug bites. You can also go the frozen food route, but it's a bit more expensive and involved.

    I use a mix of Aqueon, Northfin, and Fluval for some variety in my bettas diets along with frozen blood worms. They love them. I've heard Hikari betta food is good too.

    I don't recommend the generic foods sold at walmart. The pellets are too big, and the formula is low quality. It'll keep your betta alive, but just isn't great for them. Also, flake foods are a no no. It's just too messy, the fish doesn't eat all of it, and just isn't worth it.

    Lastly, you want to decide what kind of decor you will go with. If you go artificial, be sure to use soft, silk plants so your bettas fins do not get hurt.

    I recommend live plants always though, cause they help a lot in keeping your tank clean, produce oxygen, and will help absorb some of nitrates in the water. All around good stuff. Easy plants to take care of are anubias, java ferns, java moss, water wisteria, and floating plants like water lettuce.

    Bettas also need hiding places. This can be anything really. From the decor sold at walmart, natural looking rock caves, or even a terracotta pot. It doesn't really matter, as long as it doesn't have sharp points.

    The decor is up to you and what you like.

    Ummmmm, I can't think of anything else really. But if you need any help with anything, feel free to reach out! A lot of us are passionate about our quirky little dudes and gals and will be more than happy to help with anything you need advice on. And use the internet to your advantage too! There's TONS of good information and videos out there now, and you can find what you're looking for at the touch of a screen now.

    And also also, please do not feel bad about your start at betta keeping. We all start somewhere, and more than likely, we have all made this very same mistake. I know I did. The best thing to do now is to just work on upgrading your little dude and providing the best care you can for him. He'll start to heal up and REALLY shine.

    Apologies for extremely long message, but I hope this helps and wish you and your betta the best of luck!! ☺️
u/Dd7990 · 2 pointsr/bettafish

Unfortunately a 10g tank is far too small for any additional fish tankmates to be with a betta, but you can have some shrimp OR snails in the 10g as tankmates with the betta. If you really want to do a community tank, the minimum recommended tank size is 15g, but 20g or larger would be best for that.

Keep in mind, bettas DO NOT NEED to have tankmates, they are very territorial and aggressive fish. Most bettas will see tankmates as "intruders" to their territory; though a more docile betta will tolerate these "intruders" better than more aggressive bettas. Only rarely do you get lucky with a betta that has the personality of actually liking their tankmates, that is not the norm for most of our domestic betta splendens.

Tetras are nippy fish and although some people do keep them with bettas, they're not an ideal tankmate + they need a minimum of 15+ and must have at least a 20g for that many of them to be with a betta. - Exerpt: "These fish should generally be kept in schools with at least 15 members. Smaller schools than this can feel threatened and this can cause stress... If you’re planning to keep a school of them, you should keep at least 15-20 of them. An aquarium that is at least 20 gallons is needed for this number of them."

Please see our community guidelines for compatible betta tankmates per tank size:

Please do thorough research on the needs of each species of tankmate(s) before you consider if they are a good fit for your betta/tank-size. Cories need minimum 6 of their own kind for best results, and they like to roam around so do need the space to be able to do so (20g and up is best, 15g at the absolute minimum) + sand-type substrate is gentler on their barbels (whiskers) vs gravel types. Also don't cram in too many fish or different kinds of fish, research stocking limits for the size of tank. As I said before, the 10g can humanely house 1 betta + a few shrimp or snails, no other fish.


PLEASE PLEASE PLEASE!!! FISHLESS CYCLE, before you get the betta or any tankmates: The Nitrogen Cycle and the Fishless Cycle - getting your aquarium ready for fish - INJAF

I'd recommend Seachem Stability over other brands of beneficial bacteria, you need to shake it well before each use and add 2 capfuls per day (for a week or more) while cycling your aquarium, especially if you did any water change.

I also highly recommend the API Freshwater Master Test Kit so you're able to accurately check your ammonia, nitrite, and nitrate during the process of cyling + afterwards for routine maintenance purposes. <--- ABSOLUTELY MUST HAVE, VERY IMPORTANT, liquid water parameters test kit. Three main things to check every-other-day: Ammonia, Nitrite, and Nitrate. Not cycled will read 0 Ammonia, 0 Nitrite, 0 Nitrate. Cycling in progress will read some ammonia and/or some nitrite, but little or no nitrate. Fully Cycled will read 0 Ammonia, 0 Nitrite, and 5-10 ppm of Nitrate, then when nitrate reaches 15-20 ppm in a cycled tank a water change is necessary to reduce said nitrates.


As for Tank stuff:

I'd recommend a Sponge Filter setup over a HoB filter, because HoB tend to have a strong outflow which bettas don't like (and the one you got looks like it will be especially strong in the 10g tank since it's meant for a 20g).

Here's my favorite sponge filter setup which I use in my own 5.5g tanks (they're rated for up to 20g and are nice compact sponge filters, so do not take away much space from your tank). My bettas (and I) LOVE LOVE LOVE THIS!!!

AND from Petsmart - I HIGHLY recommend the TopFin Quartz BioBalls ceramic filter media, the rounded pearl shape makes them fit a lot more into a small space such as the dual-media chambers in the sponge filter I highly recommended above. It looks like this in store: (I think it's not yet listed on their website because the stuff is still a new release). Nice air pump with all accessories to set it up - quiet mini air pump, check valve, and airline tubing.

See it all in action: (not my tank but my friends when she was fishless cycling hers, and the sponge filter is nicely visible. Mine is hidden behind bunch of silk plants :< lol)


The Aqueon Pro adjustable 100w heater would be a bit much for a 10g unless you live in a particularly cold climate or keep the room at a chilly temperature, otherwise you would be fine with the Aqueon Pro adjustable 50w heater for a 10g tank - per the rule of thumb "5 watts of heater power per gallon" which is sufficient in most cases, except if living in a cold climate and/or the room where the tank is being kept is especially chilly.


Tetra brand betta pellets are CHOCK-FULL-O-CRAP-FILLERS - this is terrible quality betta food...

NorthFin Betta Bits, Fluval/Nutrafin Bug Bites, and New Life Spectrum Betta are HIGH quality betta pellets with good ingredients and little or none of the bad filler crap or nasty preservatives.

Hikari Bloodworms are great as a treat/diet variety as they add vitamins to their bloodworms, and ZooMed Betta Dial-A-Treat is nice for a 3-in-1 treat wheel container.

I'd recommend getting at least two different brands of the pellets I linked below + some variety of treats like bloodworms, mysis shrimp, brine shrimp, and daphnia. Alternate them day by day, meal by meal or otherwise mix them up such that the betta isn't always eating only the same thing day in and day out for every single meal.

- <-- my favorite go-to betta pellet



- Bloodworms with vitamins added:

- ZooMed Betta Dial-A-Treat is a decent 3-in-1 treat wheel container which has 3 different treats for betta diet variety.

- You can also try adding a vitamin drops to the food AND tank water - VitaChem Freshwater - Vitamin drops for aquatic animals - REFRIGERATION needed after first use/opening, to keep the liquid vitamin drops fresh.

Beware of overfeeding, which is equally bad for bettas as underfeeding (they are gluttons and would eat till they burst if given the chance) (save this pic for reference, feed betta as much as makes his belly match between 1st and 2nd photo, then let him digest back down to a normal belly before feed again.)


Again, PLEASE PLEASE PLEASE... FISHLESS CYCLE before you get a betta or any tankmates, I cannot stress the importance of that enough. The Nitrogen Cycle and the Fishless Cycle - getting your aquarium ready for fish - INJAF

u/Oucid · 5 pointsr/bettafish

Hey there! Bettas can be super fun to have and you’re gonna love watching Harmony grow!

It looks like a lot of people already started pointing you in the right direction, I want to add on to that a bit since this is a baby betta (or just much younger, cant tell that well haha sorry)

Babies need a little bit of extra care to survive, they’re more fragile than adults.

So important stuff: feeding, temperature, water changes, and “cycling” (Disclaimed: I may repeat stuff others posted)

Feeding babies - Since she is small, she only needs a bit of food each day. Babies need a lot of nutrients to grow, and we can’t always give them that super varied live diet, luckily there’s options like using supplements and frozen foods. It’s best to feed small amounts throughout the day, frozen bloodworms would work, soaked in Seachem’s Nourish for nutrients and vitamins she needs to grow healthy! You could feed one whole bloodworm a day or tiny pieces of crushed pellets, Fluval Bug Bites or Northfin Betta Bits are healthy pellets with minimum fillers and preservatives, lots of good ingredients too but shell probably still need a supplement like Nourish. You could probably find it online, I linked an amazon link below. In order to properly digest and metabolize the food, she’ll need the proper heat.

Temperature - Adult bettas can thrive in water temperatures between 78-80°F, babies on the other hand need the water to be a bit warmer at around 81-82°F. To achieve this temperature, youll probably need an adjustable heater. The smallest adjustable heater I can think of is a 25watt heater, which would be too strong for a small bowl like that.

Tank - A 3 gallon tank would fit a 25 watt heater nicely for now, then when she gets bigger you can upgrade her to a 5 gallon and still use the same heater! (A general rule is 5watts per gallon, but a 25watt would work fine in a 3 gallon) You’ll also need to cycle the tank, which i’ll explain more below, and do frequent water changes once its cycled because while the fish grow, they produce a hormone that if it builds up in the water can stunt the fish’s growth - decreasing the lifespan. In a cycled 3 gallon tank, 3-5 small water changes each week would be great in my opinion. You also want to keep the water clean of course! Gravel vacuums are great for that.

Now onto the big part, cycling and the nitrogen cycle.

Since you already have your fish, you’ll have to fish-in cycle.

Fish-in cycling -

Basically consists of 1/2 water changes every day using Seachem Prime. Do this until your tank is cycled, which I’ll explain how to know that below.

While cycling, add the beneficial bacteria directly into the filter daily.

• ⁠A good filter set up is something with low flow, it can be baffled if needed. For filter media (or the guts of the filter) cermaic bio media, aquarium sponge, and filter floss would be great. Don’t replace any of this unless it starts breaking down, then you’ll need to seed new media, but you shouldn’t have to worry about that for a long time.

You’ll need an API Master Test kit, this is an accurate way to know your parameters (such as ammonia, nitrite, and nitrate). This is more accurate than strips, with test strips its super easy to get an inaccurate reading. The kit also lasts longer so you’ll get your money’s worth. I’ll include a link below to the kit.

When the tank is cycled, you’ll test and find 0 parts per million (ppm) ammonia, 0ppm nitrite, and ‘x’ amount ppm of nitrate. (Dont focus too hard on what parts per million means, its just how this stuff is measured. Nitrates should be kept under 20ppm, they arent as toxic as ammonia or nitrites but can be in large amounts.)

After your tank is cycled, you’ll need to do weekly water changes a few times a week using a gravel vacuum preferably. Gravel vacuum/siphons allow you to get the dirt out of the gravel easily without needing to take it out. (Leave the fish in when you gravel vacuum, take care to watch where she is especially since shes small) Highly recommend getting one of these! Its a necessity!

• ⁠Avoid large water changes, it could offset the balance of your tank. Never rinse the filter media in tap water, that can kill the beneficial bacteria (which I’ll send links to explain that more in a second). To clean the filter inserts aka media, just take them out and swish or squeeze in old tank water till the gunk is out. You’ll probably only need to do this once a month or so.

You may want to opt for a sponge filter, it should be safe for the baby so she doesn’t get sucked into any filter intakes. To set it up you’d need an air pump, standard airline tubing, a check valve, and things to make a bleed valve so you can adjust it.



Nitrogen Cycle:

Fish-In Cycling:

My diagram/explanation on the cycle:


API Freshwater Master Test Kit 800-Test Freshwater Aquarium Water master Test Kit

Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 100 ml

Northfin Food Betta Bits 1Mm...

This is the best quality pellet I’ve found, here’s why:

• ⁠Nutritious, includes whole ingredients
• ⁠No fillers, hormones, or artificial pigments
• ⁠Packed with proteins, amino acids, vitamins, and minerals
• ⁠Floating pellets, roughly 1mm (they float for a bit then drop, my bettas chase them down)
• ⁠Easily digestible to promote optimal nutrient absorption

(This stuff is advertised by seller, but if you read the labels its all good. Harmony will be able to eat 5-6 of these daily as an adult. 2-3 in the morning, 2-3 at night)

Seachem Nourish 100ml

(If you do some research and find a supplement you like better, then by all means go for it!)

Helpful other supplies:

Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 500 ml

(Bacteria in a bottle, it’ll help speed up the cycling process.)

Gravel Vacuum/Siphon

(Of course you don’t need this specific one, I just chose the best seller off Amazon as an example of what to look for. The local pet store should have these for around $10)

How to use a gravel vacuum:

u/BrilliantNova · 12 pointsr/shrimptank

I was in your shoes not too long ago, it's overwhelming! Here's a list of things that I bought, but I am not an expert so if others have better input go for that:


  • 10 gallon tank with hood
  • Broad Spectrum Light The one that came with the hood did not provide enough for the plants, you definitely need to invest in a broad spectrum bulb.
  • CaribSea Flora Max Substrate I learned that shrimp prefer darker color substrate, this was worth the investment! My shrimp were so unhappy with cheap gravel, after switching to this substrate they are very active.
  • Air pump
  • Sponge filter
  • Heater, maybe optional for you?
  • Thermometer
  • Gallon Bucket
  • Siphon
  • Seachem Prime Because it's a smaller tank, I ended up poking a pinhole sized hole in the seal so that I could use it as drops rather than pouring it in.
  • [Seachem Stability] ( Use this while you're cycling your tank, follow the instructions.
  • API Test Kit
  • Feeding Tray For the longest time I was really confused as to how the feeding tray worked, you can either get a tube or pre-soak the pellets and then drop them into the tray using long tweezers. This will help prevent ammonia/nitrite spikes.
  • Long Tweezer Set
  • Pellets Do also feed them blanched vegetables, make sure to peel the skin and buy organic to avoid chemicals/pesticides
  • Timer Outlet Worth the investment! So you don't have to keep remembering to turn the light on and off.

    Shop for whatever is cheaper, I have a huge heater because I had an extra one from before. I've read that it's not necessary but also have read that if you want them to breed you need to stimulate warm water. For now, I keep the heater off and leave it at room temperature of 72F. They seem very happy! Most important in my opinion, add plenty of plants and a marimo ball or 2.

    Lastly, I'm unsure of the siphon, I think it's good to have a bucket and siphon just in case your water parameters are looking bad so you are prepared to do a water change. From what I read, shrimp have a very low bio load and should be able to sustain themselves. Make sure to do tests regularly.

    EDIT I just read that this is your first aquarium, so here is a detailed write up:

    Setting up your tank

    1. Find a stable top to place your aquarium on, keep in mind a well sunlit room will mean more plant/algae growth. Make sure it's sturdy and made for heavy objects, don't want to place it on a flimsy shelf or it might break! I keep mine on top a waterproof place mat because water drips are going to happen.
    1. Rinse everything as a precaution! NEVER use dish soap!! If you must sanitize, vinegar is okay. Just make sure to rinse thoroughly. Also, NEVER use any kind of soap on your hands before handling things, just rinse well with water. Add your substrate, I lightly rinsed mine as there are beneficial bacteria living inside the substrate, pour it in. Make sure it's at least 2" of floor. Your water will be cloudy if you bought the substrate I listed, don't worry as it will settle after an hour and be clear.
    1. Fill water half way, use a small plate and pour the water on top of that to avoid the substrate being pushed around. NEVER use hot water! If you're using tap water be sure to always use cold water. It's also recommended to purchase "RO water" (Reverse Osmosis Water) as some times your tap water can be too "hard". The best thing to do is use the test kit on tap water and go from there. If the kH/gH are very high 100+ you will need to use RO water. I like to place my plants and decor now while the tank is half full. Place in your thermometer, heater, sponge filter, etc. After that, continue to fill all the way to the top remembering to aim the stream on top the plate. Leave about a half to an inch from the top.
    1. Take out plate, plug in filter, add in Seachem Prime and Seachem Stability. Please read the label for instructions and dosage according to your tank size. Since there is nothing inside you can add it after you've added the water to the tank. Moving forward, be sure to add the chemicals in the water bucket BEFORE pouring into the tank.
    1. Turn on filter, wait for the water to settle and temperature to come up. They say shrimp can tolerate 52F to 86F but ideally room temperature water is best, this is where your water heater will come into play. Follow which ever cycling method you choose before purchasing your shrimp. This can take up to 6 weeks.

      After your tank has cycled

    1. When adding your shrimp, there are many methods, the way I acclimate my shrimp is:
    1. Put the shrimp in a 1 gallon tub using the water that they came in.
    1. Drop in a tablespoon of the tank water, ONCE every 2 minutes.
    1. After the water has reached 1/3 old water, 2/3rd new water, your shrimp are ready to be placed into your tank.

      Please don't skip the important step of acclimating your shrimp! They are very sensitive to water changes and this ensures that they will survive.

      Here are my water parameters, people have all kinds of ranges but this is what works for me:

  • kH: 60 / gH: 40 / pH: 7.0 / NO2: 0 / NO3: 20 / Ammonia: 0 / Temperature: 72F

    I hope this helps... again, I was in your shoes not too long ago, it was really overwhelming. But after a lot of research I think my tank is in a good place :). Other users, if there's anything in my list that seems incorrect please let me know!