Paddlefin Wrasse (Male)

Also known as Paddle-Fin Wrasse (Male), Cortez Rainbow Wrasse

The male Paddlefin Wrasse is a spectacular species featuring vibrant colors—typically brilliant blue-green body with orange, yellow, or red markings, and striking finnage. Males are larger, more boldly colored, and significantly more aggressive than females. This extremely active, beautiful wrasse is stunning to observe but requires substantial space and careful tankmate selection due to territorial behavior and constant activity. Males can dominate tanks and harass peaceful fish.

Key Features

• Scientific Name: Thalassoma lucasanum
• Common Names: Paddlefin Wrasse (Male), Cortez Rainbow Wrasse, Cortez Wrasse
• Adult Size: Up to 8-9 inches
• Lifespan: 10-15 years with proper care
• Temperament: Aggressive; territorial
• Reef Compatibility: Reef safe with caution; may harass peaceful fish
• Minimum Tank Size: 75 gallons preferred
• Experience Level: Intermediate to Advanced; aggression requires management

Habitat & Tank Requirements

Tank Environment: Requires a very large tank with extensive open swimming space. Extremely active swimmers needing substantial room. Provide rockwork but prioritize open water areas. Very strong water flow was appreciated. Deep sand bed (2-3 inches) for burying.

Water Parameters:

• Temperature: 72-78°F (22-26°C)
• Salinity: 1.020-1.025
• pH: 8.1-8.4
• Good water quality essential

Equipment Recommendations:

• High-capacity filtration system
• Protein skimmer
• Very strong water circulation
• Secure, tight-fitting lid (excellent jumper)
• Sand substrate mandatory

These support this extremely active, aggressive wrasse.

Diet & Feeding

Male Paddlefin Wrasses are carnivores with voracious appetites.

Recommended foods include:

• Primary: Frozen mysis shrimp, frozen krill, frozen squid
• Variety: Chopped seafood, chopped clams, scallops, marine flesh
• Quality: High-protein foods for very active metabolism
• Frequency: 1-2 times daily; hearty portions

Special Note: Very aggressive feeder; dominates feeding time. May prevent other fish from eating. Target feeding other tankmates may be necessary.

Social Structure & Compatibility

• Tankmates: Only with other large, robust, semi-aggressive to aggressive fish
• Highly Aggressive: Territorial and dominating
• Harasses Peaceful Fish: Will relentlessly chase passive species
• Dominance: Often becomes alpha fish, controlling territory and feeding

Notes & Considerations

• Absolutely stunning coloration: Brilliant blue-green body with vibrant markings.
• Orange, yellow, or red accents on body and fins.
• Males are significantly more colorful than females.
• Terminal phase (male) coloration is spectacular.
• Extremely active swimmer: Requires massive open swimming space.
• Constantly patrols the entire tank at very high speed.
• Never stops moving during daylight hours.
• One of the most active wrasse species available.
• Insufficient space causes extreme stress and aggression.
• Highly aggressive and territorial: Especially toward other wrasses.
• Will harass and chase peaceful or semi-aggressive fish.
• May prevent other fish from feeding through intimidation.
• Can cause severe stress or death to peaceful tankmates.
• Best with other large, aggressive species only.
• May even harass semi-aggressive fish in undersized tanks.
• Generally leaves corals alone; aggression focused on fish.
• Will eat ornamental shrimp if present.
• Reef-safe with major caution; fish harassment main concern.
• Excellent jumper: Absolutely secure lid with no gaps essential.
• Very high jump risk due to extreme activity level.
• Many specimens were lost to carpet surfing.
• Buries completely in sand at night for sleeping.
• Sand burial normal nightly behavior; adequate depth required.
• Very hardy and disease-resistant.
• Adapts quickly; excellent appetite.
• Can grow rapidly with proper feeding.
• Native to the Eastern Pacific (Gulf of California region).
• Less commonly available than some wrasses.
• Commands moderate to premium pricing for quality males.
• Spectacular to watch but challenging to house properly.
• Only suitable for large aggressive fish systems.
• Not recommended for peaceful communities under any circumstances.
• Requires experienced aquarists understanding aggressive fish dynamics.
• Can live 10-15 years with proper care.

Why Choose a Quarantined Paddlefin Wrasse (Male)?

Purchasing a quarantined male specimen from us means you’re starting with a healthier, properly acclimated wrasse. All fish are observed, treated as needed, and confirmed as robust feeders before sale. Given the highly aggressive nature and extreme activity level, proper quarantine allows assessment of temperament and ensures optimal condition before introduction. This provides the best foundation for managing this beautiful but very challenging species. Only recommended for large aggressive fish systems with experienced keepers. Secure lid is absolutely critical.