Picasso Triggerfish

The Picasso Triggerfish, *Rhinecanthus aculeatus*, is a captivating and highly sought-after species known for its striking and intricate geometric patterns. Its body is a canvas of bold lines and shapes, typically featuring a base color of tan or gray adorned with vibrant blue, yellow, and black markings that resemble abstract art. A prominent blue line runs from the mouth towards the pectoral fin, and a series of diagonal lines grace the upper body.

A minimum tank size of 125 gallons is recommended for a single Picasso Triggerfish, providing ample space for swimming and exploration. The aquarium should be equipped with plenty of live rock and sturdy decorations to create hiding places and territories. While generally hardy, they are known for their powerful jaws and can rearrange aquarium décor. They are not considered reef safe as they will nip at and consume invertebrates, including corals, crustaceans, and mollusks.

Distinguishing between male and female Picasso Triggerfish is difficult, and they are not commonly bred in captivity. Their diet should be varied and include a mix of meaty foods such as krill, shrimp, squid, and silversides. They will also accept high-quality marine pellets and flakes. Due to their strong teeth, it is advisable to feed them foods with shells or exoskeletons to help wear down their teeth. In a home aquarium, they can reach a size of up to 10 inches.

Quick Facts

• Scientific Name: Rhinecanthus aculeatus
• Care Level: Intermediate
• Temperament: Aggressive
• Diet: Carnivore
• Reef Compatibility: Not Reef Safe
• Region of Origin: Indo-Pacific
• Maximum Adult Size: 12"
• Recommended Tank Size: 125 gallons