Betta fish may already be 6 months to a year old by the time they arrive at the pet store. In addition, male betta fish take longer to mature and gain their full coloration, potentially making ...

Male bettas are nicknamed Siamese fighting fish for a reason: They're very aggressive with one another and with female bettas. They are violent enough to lower their expected lifespans.

A male can be introduced into a community tank of similar-size fish of different species, and can cohabitate with females of his kind — unless they rebuff his advances, at which point, Goldstein ...

Betta fish, also called Siamese fighting fish, are small, colorful fish that are native to Southeast Asia and common in the pet trade. In Thailand, people call betta fish "pla kat," which means ...