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Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Trimma:Greek, trimma, -atos = something crushed (Ref. 45335); pentherum:Name from Greek 'pentheros' meaning 'of mourning', apparently alluding to the black bar on the pectoral-fin base which, with considerable imagination, could be viewed as analogous to the black arm band worn to signify the death of a close friend or relative in certain cultures.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; reef-associated; depth range 0 - 24 m (Ref. 100726). Tropical
Western Pacific: Australia (the Great Barrier Reef) to Tonga and north to the South West Islands of Palau.
Size / Weight / Age
Maturity: Lm? range ? - ? cm Max length : 2.0 cm SL male/unsexed; (Ref. 100726)
Short description Identification keys | Morphology | Morphometrics
Dorsalspines (total): 7; Dorsalsoft rays (total): 8; Analspines: 1; Analsoft rays: 8. This species is distinguished by the following characters: a concave bony interorbital which is less than half pupil-diameter in width; slight or no groove posterodorsal to eye; presence of scales in the midline of the predorsal region; absence of opercular scales; the fifth pelvic ray is branched once dichotomously and more than 80% the length of the fourth ray; adults with the epaxial musculature reaching anteromedially to a point in line with the posterior margin of the eye; elongated spines in first dorsal fin absent (the second spine is longest, reaching to the region of the base of the second dorsal-fin spine); scale pockets are strongly outlined by melanophores and chromatophores; with a dark, vertical bar on the base of the pectoral fin; 6 grey saddles across the dorsum (Ref. 100726). Body shape (shape guide): fusiform / normal; Cross section: oval.
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Winterbottom, R. and D.F. Hoese, 2015. A revision of the Australian species of Trimma (Actinopterygii, Gobiidae), with descriptions of six new species and redescriptions of twenty-three valid species. Zootaxa 3934(1):001-102. (Ref. 100726)
IUCN Red List Status (Ref. 130435: Version 2025-2)
