Jissah sweeper
📖 Overview
Jissah sweeper (Pempheris darvelli) is a ray-finned fish of the family Pempheridae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 9.7 cm. It occurs at depths between 6 and 7 metres. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 6; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 41 - 43; Vertebrae: 25. This species is distinguished by the following characters: D VI,9; A III,41-43; pectoral rays 18-19; lateral-line scales 56-58; scales on anteroventral ctenoid and covering 90% of chest; gill rakers 30-32; body depth 2.1 in SL; head length 3.0-3.05 in SL; orbit diameter 7.45-7.7 in SL; caudal-fin length 3.45-3.55 in SL, moderately emarginate, caudal concavity 3.55-3.7 in head length; pectoral-fin length 3.15-3.2 in SL; colour in alcohol dark maroon brown, with the outer edge of scales broadly translucent gray; dorsal fin is pale yellowish, the distal half of first six soft rays and adjacent membranes black (dark pigment covering outer half of longest rays and adjacent membranes); anal fin and adjacent base of body darker brown than body, becoming progressively more translucent yellow distally, with a small brown spot on each scale; anal ray tips are translucent white; anterior five rays and membranes dark brown, the dark pigment also distally on the next five rays; caudal fin is dusky yellowish, darker brown basally and broadly darker all around margin; pectoral fins are yellowish gray with a large dark maroon brown spot covering entire base of fin; axil also dark maroon brown; pelvic fins are pale dusky yellowish .: short and / or deep; Cross section: compressed.
🌀 Behaviour
Behavioural data for Jissah sweeper is currently being reviewed.
🦐 Diet
Diet information for Jissah sweeper is currently being compiled.
🥚 Reproduction
Reproduction data for Jissah sweeper is currently being compiled.
🌍 Habitat & Distribution
Marine; reef-associated; depth range 6 - 7 m . Tropical Indian Ocean: Oman.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
No observations yet - be the first to log one!
View all observations for Jissah sweeper ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.