Whats wrong with my betta?!?

Lethargy is a symptom of either old age, cold water or bad water. When you say he's silver and white, do you just means colors or it is fuzzy, stringy? If it's just color, bettas can change color over time, but if it's color loss he could be sick or in too cold or bad water. If it's fuzzy or stringy he has a bacterial infection. The best med for it is Kanaplex/Kanamycin (online only), as it's best for any range of infections and easiest on the fish, but you need meds ASAP. I'd order the Kana but for the meantime pick up Jungle Fungus Eliminator or Clear (I like the powder kind better than the perforated pill, but that's just me). You can find it at PetCo/PetSmart. He needs a broad-spectrum antibiotic, so if you can't find that pick up Maracyn 1 and 2 (yes, both, since each only treats one type of infection). They're also at Petco, PetSmart, most local pet or aquarium stores. Maracyn is recommended least of the three because it's been around a lot longer and sometimes doesn't treat current infections and because it's not as potent. Please don't use anything else (erithromycin,penicillinn, bettafix, etc.) as it's either herbal and not a real med and he needs a real med. If he's in a cycled tank, take out the carbon or it removes the med. With any of the above meds, you can treat daily for 3 days (doing the appropriate water changes needed for your tank size, 100% if not cycled follow bottle instructions in for a cycled tank) and retreat if necessary for another 3 days. Do a water change before you do the first dose, and wait for at least 20 minutes before you add the med, as adding it earlier will dilute it somewhat.

Bacterial infections are mostly caused by cold or bad water. Does he have a heater? Bettas are tropical fish and if his water is cold (below 78 degree) it causes poor digestion, lethargy, color loss and/or illness. Depending on tank size, he needs: 1-gallon (7.5 or 10 watt heater: PetSmart and PetCo have them), 2.5-3 gallons: 25 watt heater (most pet stores have this size), 5 gallons: 50 watt heater (most pet stores have this size).

How often do you change his water? Water changes remove ammonia, which is toxic and develops in the water from uneaten food, waste, even his breathing. Ammonia is odorless, colorless and you can't see it, so just because the water "looks" clean doesn't mean it's not at toxic levels which will stress, sicken or kill your fish. If water changes aren't done often enough it stresses them out, which leads to loss of appetite, illness, lethargy or death. Water changes remove ammonia, which is toxic and forms in the water from uneaten food, waste, and even breathing. The frequency of water changes depends on the size of the tank. For uncycled 100% water change tanks, this is a guide: 1 gallon or >: change 100% of the water (and rinse off plants, gravel, etc.) every 1-3 days; 2.5-3 gallons 2-3 times/week; 5 gallons 1-2 x's/week.

That is fin rot. Go to your local fish store or store in general in the pet isle and look for medication. Turn the water temperature up, but no higher than 80F! This is the most common disease while keeping fish. If left untreated, the betta will die and suffer from fin loss. Another thing is hes stressed from being in a poor bowl and bored... Try putting decoration in the tank and moving it around every so often. Bettas shouldn't be kept in bowls... They need to be in at LEAST a 5 gallon tank with a heater and filter. The temperature should be 76-78F but 80F if you're treating fin rot or something.

try adding aquarium salt (1 tablespoon per 5 gallons) to prevent any infection and strengthen the immune system. a 25% water change and temperature of 80 degrees will also help.

http://bettacare101.com/

How old is your betta? He's probably getting old and has fin rot. You can buy medicine at your local pet store for fin rot.

I agree with Amy Miller.