You should move him over to the bigger tank, he has gotten used to the amount of his own waste in that bowl, so by moving him the waste will be more diluted and less toxins will build up so he will be able to handle that better. If you have not already, you will need to get a water treatment for chlorine and chloramine in
tap water. The brand lots of people on here use is
Seachem Prime, and it also makes the ammonia a little less toxic for a day after dosing it. You can do a half dose of the Prime every day to help manage the Ammonia and Nitrites in addition to dosing it for the amount of water replaced each water changes. I know for a fact that Petsmart carries Prime, and the smallest bottle is all you will need. The smallest bottle also comes with a dropper top and each gallon should get 2 drops of prime. He also seems to have some pretty severe fin biting, I think he is a crown tail that has bit so much of his own fins it doesn’t look like a crown tail anymore. Fin biting is caused by stress, and pretty much always as a result of poor water quality, as there is in that small bowl. Something you can get are some Indian
almond leaves usually marketed for betta fish. Make sure they are aquarium safe but most are. You can find them
on Amazon for pretty cheap. You put some of a leaf in the water and it leaches out tannins and other good stuff. It is very good for lowering stress levels of bettas and it will kind of soothe him while the leaves are in there. You can leave them in all the time, you just have to replace them every once in a while. They last a long time though. Just so you know it can cause the water to turn a little brown, that is normal and it is fine for the fish. Another thing is more live plants and decorations. Betta fish are extremely intelligent fish, I have taught mine simple tricks! He won’t be up to that for a while but they do need stimulation. Right now the focus is on getting better but having lots of things to swim through like little
caves, decorations, and live plants is good for them. Live plants aren’t crucial, but they improve the water quality by “eating” waste, and
plastic plants can damage fish’s fins. Some good hardy plants that grow well are Java fern, Anubias, and
moss balls, you should be able to find any/all of those at a Petsmart or other pet store that carries fish items. Another thing that really helps fish is a varied diet. Betta pellets from big pet stores tend to be pretty junky, if you look at the ingredients lots of them are mostly corn and flour. Bettas are carnivores who would usually eat bugs from the surface, that is why their mouths are turned upwards like they are. Try to find a food that has at least 40% crude protein, and maybe get two different foods like that for variety. At pet stores you will often find freeze dried
bloodworms, they are a bit controversial on quality and I myself prefer frozen bloodworms for my fish. You can get a pack of frozen bloodworms from lots of pet stores. The freeze dried foods have been known to get eaten quickly and then expand as they absorb moisture in the fish’s stomach, leading to bloat and possibly swim bladder problems. If you do decide to feed him freeze dried foods soak them in a little water first so they expand before they get eaten. Having variety is a good way to stimulate bettas and it is also super important for keeping them healthy.
I am going to tag/ mention a betta expert/betta guru on here just in case me and the other people missed anything.
Betta'sAnonymous
Also, I want to say thank you for helping this fish! So many people have the mentality that they are just fish and they are mindless and don’t need much care. I appreciate people like you who also acknowledge that fish deserve to be treated with care just like every other critter. Thanks for putting in the time, money, and effort to give this little guy a good life. Fish, especially bettas are known to be super resilient, I hope he comes back from this and lives a great life.They can regrow their fins, so keep a look out and you may see some new growth. I definitely think that when you move him over the improved conditions will result in his color becoming much brighter! I saw the doctor Seuss sign in the background so I assume you work with kids. Has he been given a name yet?