Trimma meristum, Split-ray pygmygoby

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Related species
- Species in
  Trimma
- Species in
  Gobiidae
- - Classification -
- Gobiinae
- Gobiidae
- Gobiiformes
- Teleostei
- Chordata
- Animalia

Trimma meristum Winterbottom & Hoese, 2015

Split-ray pygmygoby

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Native range

This map was computer-generated and has not yet been reviewed.

Trimma meristum AquaMaps Data sources: GBIF OBIS

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Image of Trimma meristum (Split-ray pygmygoby)

Trimma meristum
Male Picture by Winterbottom, R.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Trimma: Greek, trimma, -atos = something crushed (Ref. 45335); meristum: Name from the Greek ‘meristos’, meaning divided; referring to the two dichotomous branches in the fifth pelvic-fin ray resulting in four terminal tips, distinct feature of this new species.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 0 - 7 m (Ref. 100726). Tropical; 1°S - 21°S, 14°E - 180°E (Ref. 100726)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Pacific: Australia (Great Barrier Reef), Papua New Guinea (Bismark Archipelago) and Fiji.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 2.0 cm SL male/unsexed; (Ref. 119492)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 8; Anal spines: 1; Anal soft rays: 7. This species is distinguished by the following characters: concave bony interorbital is less than half pupil-diameter in width; with a slight or no groove posterodorsal to the eye; scales in the midline of the predorsal 8-10; anal-fin rays 7; the fifth pelvic ray is branched twice dichotomously and subequal to the fourth in length, with a full basal membrane; the epaxial musculature reaches anteromedially to a point in line with the posterior margin of the pupil in adults; scale pockets on the head and body are strongly outlined by brown chromatophores (Ref. 100726).
Body shape (shape guide): fusiform / normal; Cross section: oval.

Species collected from jetty pilings, log debris, and concrete stairs at the water’s edge, at about 1-4 meters. It apparently have an affinity for sponge-encrusted surfaces, but the general area where it is observed is characterized by extensive silty mud substrata inhabited by a large number of burrowing gobies. It was not previously observed despite nearly 100 hours of scuba-diving because the collection site is immediately adjacent to shore at a busy shipyard where diving is usually banned during daylight hours. Most of the specimens were found on the inner side of a single pillar of the jetty, which was situated in total shade (Ref. 119492).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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 2024-2)

Least Concern (LC) ; Date assessed: 07 September 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest

FAO - Publication: search | FishSource |

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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01023 (0.00477 - 0.02194), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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