Dusky sweeper
📖 Overview
This fish is common on coral reefs ; forming aggregations in caves or crevices or under overhangs by day, but a few may at times be seen in the open, close to the shelter of reefs. This species is also observed forming small groups with Myripristis murdjan at 0.5-1 m below the surface. At night, it is known to feed on zooplankton . Spawning occur during April to June, and is year-round in Okinawa I. (Koeda et al., in press - in Ref. 95675). Spawning occurred after sunset with individuals larger than 11 cm SL joining the spawning group . Flesh is edible .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 6; Dorsal soft rays (total): 8 - 10; Anal spines: 3; Anal soft rays: 36 - 45; Vertebrae: 25. This species is distinguished by the following characters: pectoral fin base with a faint blackish spot; pored lateral-line scales 56-64 (Andaman Sea 52-58; Pacific 51-62); scale rows above lateral line 4.5-6.5 (usually 5.5; Andaman Sea and the Pacific Ocean, 4.5-5.5, usually 4.5); circumpeduncular scales 14-18 (usually 16); outer edge of anal fin with a distinct blackish band (rarely faint or only anterior half prominent; usually none in Pacific); posterior edge of caudal fin with a blackish band (caudal fin whole yellowish in Andaman Sea); upper-jaw length 14.2-15.6% SL; body depth 41.4-45.4% SL. Individuals in the Pacific are distinguished from its congeners by the following set of characters: ctenoid and deciduous scales are thin and semicircular in shape; 51-62 pored lateral-line scales; 4.5-5.5 (usually 4.5) scale rows above lateral line; pectoral fin base with a faint blackish spot; anal fin usually have no blackish outer margin; anal fin base with a dusky band .: short and / or deep; Cross section: compressed.
🌀 Behaviour
Behavioural data for Dusky sweeper is currently being reviewed.
🦐 Diet
Diet information for Dusky sweeper is currently being compiled.
🥚 Reproduction
Reproduction data for Dusky sweeper is currently being compiled.
🌍 Habitat & Distribution
Marine; reef-associated; depth range 0 - 20 m . Subtropical distributed and abundant in the Indian Ocean (including the Red Sea to Andaman Sea) to the Pacific; not in the Mediterranean Sea.
🌿 Ecology
zooplankton (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
⚡ Nutrition
Per 100g cooked — Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 19.2 g |
| Omega-3 (total) | 166 mg |
🔬 Mercury Safety
Mercury data for Dusky sweeper has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔍 Similar Species
👥 Community & Contribute
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