Cheekspot Scorpionfish (Scorpaenodes evides)
The Cheekspot Scorpionfish (Scorpaenodes evides), also known as the Little Scorpionfish or Shore Scorpionfish, is a small, cryptic species of the Scorpaenidae family. It is found across the Indo-Pacific region, typically residing in shallow reefs and rocky coastal environments. Its excellent camouflage, venomous spines, and ambush-hunting techniques make it a fascinating yet challenging species for marine aquarists.
Key Information
• Small fish safe ⚠️ With caution (may prey on very small fish)
• Small invertebrate safe ⚠️ With caution (will consume small crustaceans)
• Coral safe ✅ Yes (does not harm corals)
• Minimum tank size 115 litres (30 gallons)
• Adult size Up to 11 cm (4.3 inches)
• Diet Carnivorous, feeding on small fish and invertebrates
• Be aware of Venomous dorsal spines; handle with extreme caution
Appearance and Colouration
The Cheekspot Scorpionfish is well-camouflaged to blend into its surroundings:
• Body Colouration
Typically brown, pink, or reddish, with intricate mottled patterns for cryptic camouflage.
• Markings
A distinctive dark blotch on the lower part of the operculum (gill cover).
• Head Features
Leaf-like skin flaps on the head and body help break up its outline, enhancing its camouflage.
• Fins
The fins are covered in red dashes, and the pectoral fins are broad, allowing it to remain well-hidden among rocks and coral rubble.
Natural Habitat and Behaviour
In the wild, Scorpaenodes evides inhabits shallow marine waters, rocky reefs, and coral formations at depths ranging from 1 to 55 metres.
• Nocturnal Predator
• Prefers hiding in caves and crevices during the day.
• Actively hunts at night, ambushing small fish and crustaceans.
• Ambush Strategy
• Remains motionless, waiting for prey to come close before striking with lightning speed.
• Territorial Nature
• Typically solitary, defending a small hunting range.
Tank Requirements and Water Parameters
• Minimum Tank Size 115 litres (30 gallons)
• Water Parameters
• Temperature 24°C – 28°C (75°F – 82°F)
• pH 8.1 – 8.4
• Specific Gravity 1.020 – 1.025
• Aquascaping
• Provide rockwork, caves, and overhangs to mimic natural shelter.
• Use live rock and coral rubble for hiding spots.
• Lighting
• Moderate to low to reflect its nocturnal habits.
• Water Movement
• Moderate, avoiding strong currents that could disturb its preferred hiding spots.
Diet and Feeding
The Cheekspot Scorpionfish is a carnivorous ambush predator requiring a diet of live or frozen meaty foods.
• Primary Diet
• Live mysis shrimp, small marine fish, and amphipods.
• Frozen krill, silversides, and chopped squid once accustomed to captivity.
• Feeding Frequency
2–4 times per week, ensuring portions are appropriately sized.
Feeding Tip:
• If reluctant to eat frozen food, use feeding tongs to mimic prey movement.
Compatibility and Social Structure
• Temperament
• Solitary and territorial, especially in small spaces.
• Can coexist with larger, non-aggressive fish.
• Tank Mates
• Suitable with tangs, larger wrasses, and peaceful angelfish.
• Avoid small fish and shrimp, as they will be eaten.
• Do not keep with aggressive predators that may outcompete it for food.
Important Considerations
• Venomous Spines
• The dorsal fin spines contain venom, which can cause intense pain, swelling, and nausea.
• If stung, immerse the affected area in hot water and seek medical attention if necessary.
• Feeding Challenges
• May require live food initially, but can be weaned onto frozen alternatives.
• Reef Compatibility
• While safe for corals, it will prey on ornamental shrimp and small fish.
Summary
The Cheekspot Scorpionfish (Scorpaenodes evides) is a well-camouflaged, venomous ambush predator that thrives in aquariums with structured rockwork and calm, stable conditions. While reef-safe, its predatory nature makes it unsuitable for tanks with small fish and crustaceans. Best suited for experienced reef keepers, this species rewards careful care with its fascinating hunting behaviours and cryptic beauty.