behaviour

Animal behaviour: Inside the cunning, caring and greedy minds of fish By revealing that fish cooperate, cheat and punish, Redouan Bshary has challenged ideas about brain evolution. Alison Abbott 26 May 2015...

I have a 55G tank with some peacocks, frontosa, venustus and only one red jewel that most of the time has a nice red coloration. For the past 3 days this fish developed a very intense red coloration and became agressive toward the other fish in the tank. Today I found out that the red jewel is a...