Volitans Lionfish

Care at a glance

Overview

The volitans lionfish is not a fin-nipper, but it is a genuine predator: any fish or shrimp small enough to fit in its wide mouth is at real risk, including tankmates added long after it has settled in, so stock only size-appropriate, robust fish and skip shrimp altogether. It is kept fish-only for this reason, not because it bothers coral or rock. Freshly wild-caught fish usually need live feeder shrimp or feeder fish to start eating, and most convert over to fresh or frozen silversides, shrimp, and squid within a few weeks of patient target feeding. Handle this fish with real caution: the dorsal, pelvic, and anal spines are venomous and deliver a sting far more painful than a bee sting, so never net or touch one bare-handed, treat any sting with hot water right away, and seek medical care.

In the wild

Lives around coral reefs, rocky drop-offs, and harbor structure across the Indo-Pacific, from about 2 to 55 meters deep. It spends daylight hours hovering almost motionless near ledges and overhangs, then becomes active around dusk, using its huge fan-like pectoral fins to corner small fish and crustaceans against the rock before swallowing them whole. In the tank it wants a large aquarium with open water to patrol and enough rockwork to give it a shaded resting spot during the day.

Good to know

Pterois volitans is a scorpionfish in the family Scorpaenidae and one of the larger lionfish species, reaching about 38 cm in a home aquarium. It hunts by spreading its oversized pectoral fins to corner prey against rock or open sand, then engulfs it in a single fast strike. The venom glands run along grooves in the dorsal, pelvic, and anal spines and exist purely for defense against predators, not for subduing prey.

Did you know

This species is behind one of the fastest marine fish invasions on record: first documented off the Florida coast in 1985 and established in the Bahamas by 2004, it likely began with a handful of aquarium releases and has since spread across the western Atlantic, Caribbean, and Gulf of Mexico, where it has almost no natural predators. It is a stark reminder to never release an aquarium fish into the wild.

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