The Blue Gill Longfin Grouper (Plesiops corallicola), is a odd almost prehistoric looking species of grouper that sports a rounded head, big eyes, a vivid blue spot on their gill plates, and long flowing fins. The Blue Gill Longfin Grouper feeds primarily on other small fish and crustaceans in the wild, you can expect the same in your home aquarium. This fish appreciates low light environments with a couple of solidly constructed caves (these fish will dig). Only one grouper should be kept to a tank. A diet of meaty chunks of marine foods(such as raw shrimp) or a frozen food formulated for marine carnivores should be offered. While this grouper may appear shy on introduction, in short order, it will prove a personable, disease resistant, beautiful fish for the large fish-only (FOWLR) marine aquarium.