Sargassum Frogfish

The Sargassum Frogfish, *Histrio histrio*, is a master of camouflage, perfectly blending into its namesake, the Sargassum seaweed. Its body is mottled with shades of brown, tan, and yellow, often adorned with fleshy appendages that mimic the algae. This ambush predator has a large, upward-pointing mouth and a modified dorsal spine that acts as a fishing lure, enticing unsuspecting prey.

A minimum of a 30-gallon aquarium is recommended for a single Sargassum Frogfish, though larger tanks are always beneficial. The tank should be aquascaped with plenty of live rock, macroalgae, and other structures that provide hiding places and mimic its natural Sargassum habitat. Good water quality is essential, with stable parameters.

The Sargassum Frogfish is a carnivorous ambush predator and should be fed a diet of live or frozen meaty foods such as feeder fish (like mollies or guppies), shrimp, and krill. They are not active hunters and will wait for prey to come to them. Overfeeding should be avoided.

This species is not considered reef-safe as it will consume any fish or invertebrate small enough to fit in its mouth. It is best kept in a species-only tank or with other large, non-aggressive fish that it cannot swallow.

Breeding in captivity is rare and challenging. There are no readily apparent visual differences between males and females. The Sargassum Frogfish can reach a size of up to 8 inches in the aquarium.