Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobiinae
Etymology: Trimma: Greek, trimma, -atos = something crushed (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 20 - 50 m (Ref. 54980). Tropical; 28°N - 8°S
Indo-Pacific: Chagos and Hawaiian islands; probably occurring in Guam. Records from Red Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.5 cm SL male/unsexed; (Ref. 48637)
soft rays: 9 - 10. Males have longer dorsal spines and yellow spotting on the fins (Ref. 1602); characterized further by semi-translucent upper part of body, pinkish orange below; head and median fins with yellow orange spots; elongate and filamentous second dorsal spine; fifth pelvic ray branched, 75-85% length of fourth ray; longitudinal scale series 23-24; predorsal scales absent; cheek and opercle without scales; depth of body 4.0-4.2 in SL (Ref. 90102).
Occur in caves of drop-offs at depths of about 25 to at least 50 m (Ref. 48637, 58302). Benthopelagic (Ref. 58302). Form loose schools near the roofs or sides of caves and disappears into holes or crevices when approached. Often seen with other species of Trimma and feeds on harpacticoid copepods (Ref. 48637).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 24.6 - 28.5, mean 27.9 (based on 85 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00412 - 0.01842), b=3.09 (2.92 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.0 ±0.00 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .