Chalk Basslet
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The Chalk Basslet (Serranus tortugarum), also known as the Chalk Bass, is a hardy and personable reef fish appreciated for its bright vertical blue striping and confident behavior. Small but assertive, this species makes an excellent addition to reef and fish-only aquariums when housed with compatible tankmates.
Common Name: Chalk Basslet, Chalk Bass
Scientific Name: Serranus tortugarum
Family: Serranidae
Size: Up to 3 inches (7.5 cm)
Temperament: Semi-aggressive
Difficulty: Easy
Reef Safe: Yes
Native Region: Found throughout the Western Atlantic and Caribbean, including Florida and the Bahamas, typically inhabiting rocky reefs, ledges, and rubble zones.
Tank Size: Minimum of 30 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate/Decor: Live rock with caves and crevices for shelter; provide defined territories and moderate water flow.
• Diet: Carnivorous—readily accepts mysis shrimp, brine shrimp, finely chopped seafood, and high-quality frozen or pellet foods.
• Behavior: Confident and hardy; may establish territory but rarely causes serious aggression in appropriately sized tanks.
• Tankmates: Best kept with other semi-aggressive reef fish; avoid housing with very small or timid species.
• Care Notes: Extremely adaptable and forgiving, making it a great choice for both newer and experienced reef keepers.