Long-snouted Whiptail Catfish

Sturisoma rostratum is native to Peruvian Amazon tributaries and is recognised within the genus for its notably extended, narrow rostrum — longer proportionally than in most other Sturisoma species. This likely represents an adaptation for probing narrow crevices in wood and root masses to access algae and biofilm inaccessible to broader-snouted congeners.

In the aquarium, care mirrors that of other large Sturisoma. A well-established tank with abundant driftwood, good water movement, and regular water changes will keep this species in excellent condition. The elongated snout makes it visually distinctive and adds to its appeal as a conversation piece in any South American display aquarium.

Sturisoma rostratum has been bred in captivity and its fry are raised in the same manner as other Sturisoma species. Males develop pronounced facial odontodes during the breeding season. Eggs are deposited on flat, smooth surfaces and the male guards and fans them until hatching.

Water: 23–28°C, pH 6.0–7.5, soft to moderate (GH 3–12); moderate flow and good oxygenation. Tank: 150 L minimum; driftwood with crevices suits its elongated snout; broad flat surfaces for spawning. Feeding: Algae wafers, spirulina, blanched vegetables; long snout allows foraging in tight spaces. Breeding: Standard Sturisoma; male guards egg batch on flat surface. Compatibility: Peaceful with all medium to large community fish.