While it is common for pet betta fish to lose fins, according to the experts, it is not normal. Either fin rot (which is caused by an infection) or fin loss (caused by external factors) could be the ...
With their long delicate fins, betta fish need a tank with low water flow and lots of places to hang out and nap. A 5-gallon tank is ideal for most betta fish, and they should never share their tank ...