No, you can't cuddle them, but these fish sure are adorable. Here's what to know before adding them to your tank.

Some blue varieties include the Peacock Cichlid, Electric Blue Ahli ... or together with fish to create a colorful tank. The minimum size for shrimp is 5 gallons, though you should go bigger ...

Dominant males, which have higher levels of androgen hormones, are larger, more aggressive, and more colorful than subordinate ... status in a highly social cichlid fish, Frontiers in Behavioral ...