i recently bought these jaguars (along with some other fish). they were clearing the gravel in the tank so i thought they were about to mate. so i took them out and put them into a separate 55 gallon tank with a flat rock to lay their eggs. they moved all the gravel in this tank too but now they just stay in separate sides and come out only to fight. can someone tell me what sex they are (and how can you tell)?

