Scaleless spiny waspfsh (Ablabys gymnothorax) is a ray-finned fish of the family Tetrarogidae. It inhabits marine (saltwater) waters. This species can reach a maximum total length of 8.3 cm. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.
Dorsal spines (total): 16; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 8 - 9; Vertebrae: 26. This species is distinguished by the following set of characters: D XVI,9; A III,8-9; pectoral-fin rays 12-13; total gill rakers 6, including rudiments; scale rows in longitudinal series 88-90 (mode 89); scale rows above lateral line 11-13; scale rows below lateral line 30-34; scale rows between sixth dorsal-fin spine base and lateral line 10-13; thorax no scales; interspinous dorsal-fin membranes weakly notched; last dorsal-fin soft ray joined posteriorly by membrane to dorsal edge of caudal peduncle and basal upper margin of caudal fin; vertebrae 9 + 17; head short, its length 27.7-29.5% (mean 29.2%) of SL; snout short, its length 5.6-6.8% (6.1%) of SL; orbit diameter 8.1-9.9% (8.9%) of SL; interorbital width 4.1-4.4% (4.2%) of SL; postorbital length 14.9-15.6% (15.2%) of SL; body depth 29.6-35.3% (31.1%) of SL; anal-fin base length 32.1-35.0% (32.9%) of SL; caudal-fin length 39.1-45.0% (42.6%) of SL; dorsal-fin rays and pelvic-fin spine long, second dorsal-fin spine length 39.0-48.5% (44.3%) of SL, third dorsal-fin spine length 35.8-40.8% (38.3%) of SL, fourth dorsal-fin spine length 25.4-30.6% (28.1%) of SL, fifth dorsal-fin spine length 19.1-24.7% (22.2%) of SL, sixth dorsal-fin spine length 17.4-19.6% (18.6%) of SL, penultimate dorsal-fin spine length 17.2-19.8% (18.9%) of SL, last dorsal-fin spine length 17.8-20.6% (19.5%) of SL, longest dorsal-fin soft ray length 24.2-29.9 % (28.2%) of SL, pelvic-fin spine length 12.7-14.9% (14.0%) of SL. Colouration: body uniformly brown, fins blackish (fresh and preserved specimens) .: short and / or deep; Cross section: compressed.
Behavioural data for Scaleless spiny waspfsh is currently being reviewed.
Diet information for Scaleless spiny waspfsh is currently being compiled.
Reproduction data for Scaleless spiny waspfsh is currently being compiled.
Marine; benthopelagic; depth range ? - 27 m . Subtropical central Vietnam.
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