Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Opistognathidae
Etymology: Opistognathus: Greek, opisthe = behind + Greek, gnathos = jaw (Ref. 45335); nigromarginatus: Name from Latin 'nigro' or black and 'marginatus' meaning enclosed with a border; refers to the conspicuous inner maxillary stripe of this species. More on author: Rüppell.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 2 - 17 m (Ref. 90102). Tropical
Indo-Pacific: Red Sea and eastern Africa to the South China Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.6 cm TL male/unsexed; (Ref. 5468)
soft rays: 14 - 15. This species is distinguished by the following characters: elongate supramaxilla and posterior end of maxilla produced as a thin flexible lamina, in adults it usually extends almost to or beyond rear margin of opercle; dorsal fin with an ocellated spot between third or fourth and eighth spines; inner lining of upper jaw and adjacent membranes with a single conspicuous black stripe that touches ventral margin of maxilla for most of its length; D Xl,14 or 15 (exceptionally 15); body with about 68-95 oblique scale rows; total gill rakers 36-45, usually 39-45 (Ref. 81517).
Inhabits burrows in shallow coastal waters. Also found in sand/rubble bottoms in 2-17 m (Ref 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Smith-Vaniz, W.F., 1986. Opisthognathidae. p. 726-727. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 5468)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 25.3 - 29.2, mean 28.5 (based on 2714 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00171 - 0.01168), b=3.12 (2.89 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.6 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .