My 2 year old male betta fish just lingers at the bottom of his tank. He won't eat or swim about. When we got him he was very active and liked swimming around his tank, now he doesn't even responded to taping on the tank we keep him at the appropriate temperature and we change 25% of the water. I need help because it could happen to my second betta.
any questionable test readings in your water at all? any sudden shift in ph? some ammonia? anything?
whats your last test reading at?
Bettas lifespan is about two years, so maybe hes just growing old?
as the Betta when originally bought is usually around half a year to a year old already, chances are your fish is nearer to 3 years old.
Average lifespan of Betta is around 3 years, but noticeable to owners around 2 years.
It is possible they live longer (sometimes to 4 or 5 years and 6+ if you are truly lucky!), but this is dependent on the fishes history with illness, how well his living space has been maintained (including size!) and to some extent.. its breeding lines too. As most betta you buy in the shops are bred for thier color, and fin types etc, you may well find that they have shorter lifespans in certain varieties of betta, and they are somewhat more sensitive to disease too.
overall lovely fish but their breeding often affects their lifespan and susceptability to illness.