Diagnostic Description
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Diagnosis: The slightly shorter pectoral fin, 11-13% of standard length, and the black marking of the upper part of the dorsal fin are the only satisfactory characters separating this species from Chirocentrus nudus; there is also some black on the anterior part of the anal fin (Ref. 188).Description: With numerous dagger-like teeth (Ref. 37816). Lower gillrakers 12-16 (Ref. 6595). Pectoral fin shorter than distance between eye centre and hind border of gill cover, 11-13% of standard length; dorsal fin with 4-5 unbranched and 12-14 branched rays; anal fin with 3-4 unbranched and 26-32 branched rays; pectoral fin with 1 unbranched and 13-15 branched rays; pelvic fin with 1 unbranched and 6-7 branched rays (Ref. 2871, 6595, 30573). Scales numerous, small, usually lost (Ref. 6595, 37816). Belly without scutes (Ref. 6595).Colouration: Silvery; back bright blue, fading to grey; flanks bright silver (Ref. 37816).
- Recorder
- Crispina B. Binohlan
Diseases and Parasites
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Camallanus Disease. Parasitic infestations (protozoa, worms, etc.)
Diseases and Parasites
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Acanthocolpus Infestation 1. Parasitic infestations (protozoa, worms, etc.)
Diseases and Parasites
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Acanthocolpus Infestation 2. Parasitic infestations (protozoa, worms, etc.)
Diseases and Parasites
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Megamicrocotyle Infestation. Parasitic infestations (protozoa, worms, etc.)
Diseases and Parasites
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Nybelinia Disease. Parasitic infestations (protozoa, worms, etc.)
Diseases and Parasites
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Camallanus Infection 4. Parasitic infestations (protozoa, worms, etc.)
Migration
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Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).
- Recorder
- Crispina B. Binohlan
Morphology
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Dorsal spines (total): 0; Dorsal soft rays (total): 16 - 19; Analspines: 0; Analsoft rays: 29 - 36
- Recorder
- Crispina B. Binohlan
Trophic Strategy
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Occurs in inshore waters of the continental shelf (Ref. 75154).
- Recorder
- Crispina B. Binohlan
Biology
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Occurs inshore, including brackish waters (Ref. 12743), from the shore to a depth of about 120 m (Ref. 30573). In Australia, it was reported in water temperatures of 26.0-29.0 °C (Ref. 4959). It feeds mainly on small fish and crustaceans (Ref. 188, 30573). Voracious predators of small schooling fishes, e.g. herrings and anchovies (Ref. 37816). Marketed fresh, frozen or dried and salted.
- Recorder
- Crispina B. Binohlan
Importance
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fisheries: commercial; gamefish: yes; bait: usually
- Recorder
- Crispina B. Binohlan