Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobiinae
Etymology: Trimma: Greek, trimma, -atos = something crushed (Ref. 45335); volcana: Named for Volcanus, Roman god of fire, referring to the amber-red spots on an earthy brown background that resemble numerous small, volcanic vents on a lava field, and is suggestive of the hot-spot origins of the Comores Islands; noun in apposition.. More on author: Winterbottom.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 0 - 24 m (Ref. 57687). Tropical
Western Indian Ocean: Tanzania, Mozambique and the Comores Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.9 cm SL male/unsexed; (Ref. 57687); 1.7 cm SL (female)
spines: 9-11. Diagnosis: Characterized by having large spots on the head and body; moderate to well-developed interorbital and postorbital trenches; scales on the pectoral and pelvic fin bases, except on cheeks, opercles, or midline of the nape; a posterior nostril which is adnate to the eye; a fifth pelvic fin ray that is 80-9% of the fourth and is branched dichotomously twice (Ref. 57687).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Winterbottom, R., 2003. A new species of Trimma (Gobiidae) from the western Indian Ocean. Aqua, J. Ichthyol. Aquat. Biol. 7(1):9-12. (Ref. 57687)
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
): 26.9 - 28.9, mean 27.5 (based on 214 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00427 - 0.01860), b=3.08 (2.91 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .