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Volitans Lionfish
Pterois volitans
Animalia›Chordata›Actinopterygii›Scorpaeniformes›Scorpaenidae
📍 Indo-Pacific (invasive in Atlantic)
The iconic lionfish with dramatic, flowing venomous spines and bold red-and-white banding. Venomous dorsal spines can inflict painful injuries. Will eat any fish or shrimp small enough to swallow. Hardy and long-lived.
Care Guide
Diet
Volitans lionfish are strict carnivores that require live or frozen meaty foods such as small fish, shrimp, and squid. Feed 2-3 times per week with appropriately-sized prey items (no larger than half the lionfish's mouth width). Frozen options like silversides, capelin, and thawed frozen shrimp are readily accepted and safer than live prey.
Behavior
These iconic predators are semi-aggressive and relatively sedentary, spending much of their time hovering or resting near structures. They are primarily nocturnal hunters that use their venomous spines for defense and prey capture. Lionfish are generally solitary and territorial; handle with extreme caution as their venomous dorsal spines can inflict painful, potentially serious injuries to aquarists.
Breeding
Breeding volitans lionfish in captivity is extremely rare and difficult, with very few documented successful spawns in home aquariums. They require very large tanks, specific water conditions, and live planktonic food for larvae, making captive breeding impractical for most hobbyists. Wild-caught specimens are the norm in the aquarium trade.
Tank Mates
Similar saltwater requirements; clownfish are fast enough to avoid predation and occupy different tank zones
May be eaten if small; only suitable in larger tanks with plenty of hiding spaces
May be consumed; only attempt in very large tanks where shrimp can maintain distance
Nocturnal like lionfish; similar size and behavior reduce predation risk
Bottom-dwelling species that occupies different space; large enough to avoid predation
Common Diseases
Parasitic Infections (Marine Ich)
White spots on body and fins, rapid breathing, flashing against surfaces, lethargy
Increase water temperature gradually to 28-29°C, maintain excellent water quality, use copper-based treatments or hyposalinity therapy; quarantine infected fish
Bacterial Infections
Fin rot, open sores, cloudy eyes, loss of appetite, discoloration around wounds
Perform large water changes, improve water quality, use antibiotic medications (e.g., kanamycin or tetracycline) if severe; isolate in quarantine tank
Venomous Spine Injuries (to handler)
Severe localized pain, swelling, numbness, potential systemic effects depending on venom load
Immediately soak affected area in hot water (as hot as tolerable, 43-45°C) for 20-45 minutes; seek medical attention; pain management and antibiotics may be needed
Feeding Refusal
Loss of appetite, weight loss, lethargy, hiding behavior
Check water parameters (pH, salinity, temperature); offer varied prey items; ensure tank is not overcrowded; may indicate stress or poor acclimation
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Quick Facts
- pH
- 8.1–8.4
- diet
- carnivore/fish/shrimp
- maxSize
- 15 inches
- salinity
- SG 1.020–1.025
- minTankSize
- 120 gallons
- temperature
- 75–82°F (24–28°C)
Temperature
75–82°F
24–28°C