Raphael Catfish

The Raphael Catfish, also called the Striped Raphael or Talking Catfish, is a robust armored catfish native to slow-moving rivers and flooded forest habitats of the Amazon and Orinoco basins. Its common name references the audible squeaking or clicking sound it produces by grinding pectoral fin spines against its shoulder girdle, an unusual form of stridulation used when stressed or handled. The body is protected by rows of bony plates and lined with three broad pale stripes against a dark background, providing camouflage among leaf litter and submerged wood. Popular in the aquarium trade for its hardiness and peaceful temperament toward similarly sized fish, it is a nocturnal scavenger that thrives in a wide range of water conditions.

• Three broad cream to yellow longitudinal stripes on a dark brown-black body
• Rows of bony lateral scutes (plates) running the length of the body
• Sharp, locking spines at the leading edge of pectoral and dorsal fins
• Flattened head with long sensory barbels around the mouth
• Produces audible clicking/squeaking sounds (stridulation) when disturbed
• Similar species: other doradid catfish share the striped pattern but differ in spine shape and stripe width; juveniles are more vividly striped than adults.

Raphael Catfish inhabit slow-flowing rivers, oxbow lakes, and seasonally flooded forest (varzea) habitats throughout the Amazon and Orinoco river basins of South America, including Peru, Brazil, Colombia, and Venezuela. They favor soft, tannin-stained blackwater or whitewater with abundant submerged wood, leaf litter, and root tangles that provide daytime shelter. Tolerant of a wide range of temperatures and water chemistry, they can also be found in slower tributaries and flooded riverine backwaters where currents are minimal. Their armored bodies and cryptic coloration allow them to blend into detritus-rich substrates where they spend much of the day motionless.

Primarily nocturnal, Raphael Catfish emerge after dark to forage along the bottom for worms, insect larvae, small crustaceans, and organic debris, using their sensitive barbels to locate food in murky water. During the day they hide beneath logs, rocks, or leaf litter, often in small groups. When threatened or removed from water, they lock their pectoral spines outward and rub them against their shoulder bones to produce a distinct clicking or squeaking sound, a defense that can deter predators and even snag them in nets. Reproduction in the wild is tied to seasonal flooding, with eggs scattered among submerged vegetation; the species shows no parental care.