Cutlass Thryssa

📖 Overview

Cutlass Thryssa (Thrissina cultella) is a ray-finned fish. It inhabits marine (saltwater) waters in pelagic environments. This species can reach a maximum total length of 11.4 cm. It occurs at depths between 16 and 22 metres. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

This species is distinguished by the following characters: upper jaw is long, the posterior tip is beyond the first pectoral-fin ray insertion, but not reaching to posteriormost pectoral-fin insertion; first supramaxilla minute, oval; branched rays of dorsal fin 10-11 (modally 11), anal fin 31-34 (33) and pectoral fin 10-12 (12); transverse scales 9-10 (9); scale rows in longitudinal series 37-41 (38); gill rakers on first gill arch, upper series 15-17 (16), lower series 21-23 (22), total 36-39 (38); gill rakers on second gill arch, upper series 12-15 (13), lower series 21-23 (22), total 33-38 (36); gill rakers on third gill arch, upper series 10-12 (12), lower series 11-14 (12), total 21-25 (24); gill rakers on fourth gill arch, upper series 9-11 (10), lower series 10-13 (12), total 20-24 (23); the head is rather short, its length 25.2-27.1% SL; body depth 24.4-26.9% SL; pectoral fin is short, its length 17.5-19.1% SL; pelvic fin rather long, its length 9.3-10.5% SL; dorsal-fin base long, its length 9.0-10.6% SL, anal-fin base short, with length 28.6-32.2% SL; the lower jaw is rather long, its length 18.3-20.1% SL .Cross section: compressed.

🌀 Behaviour

Behavioural data for Cutlass Thryssa is currently being reviewed.

🦐 Diet

🥚 Reproduction

🌍 Habitat & Distribution

Marine; pelagic-neritic; depth range 16 - 22 m . Tropical Indian Ocean: India.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

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