Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Schismatogobius: Greek, schisma, -atos = crack, fissure + latin, gobius = gudgeon (Ref. 45335); essi: Named after NGO ESSI (Ecological Solution, Solomon Islands), which tries to improved taxonomic and ecological knowledge of species and ecosystems throughout the Solomon Islands, through close collaboration with local tribes or communities. A noun in apposition.
Eponymy: Named after an NGO: ESSI (Ecological Solutions, Solomon Islands), which tries to improve taxonomic and ecological knowledge of species and ecosystems throughout the Solomon Islands. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Oceania: Solomon Islands.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.6 cm SL male/unsexed; (Ref. 116768)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 1; Anal soft rays: 8 - 9. Schismatogobius essi is distinguished by having the following characters: pectoral fin usually with 15 pectoral; pectoral fins with broad black triangular wedge dorsally usually with few rows of dark spots below it; dorsal flns VI-I,9; membrane in flrst dorsal fin posterior to spine 6 not connected to base of spine in second dorsal fln; anal fln I,8-9; ventral surface ofhead, frenum and
pelvic disc in male entirely blackish or entirely brownish; and in females, underside of head pale with chin and surrounding area blackish, with diffuse dark brown area on anterior part of branchiostegal membrane and isthmus (Ref. 116768).
Occurs in streams with moderate to fast flow in shallow areas of gravel (depth 0.3-0.7 m) just above tidal influence, in company with Schismatogobius bruynisi and S. vanuatuensis (Ref. 116768).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Keith, P., C. Lord and H.K. Larson, 2017. Review of Schismatogobius (Gobiidae) from Papua New Guinea to Samoa, with description of seven new species. / Revue de Schismatogobius (Gobiidae) de la Papouasie-Nouvelle-Guinée à Samoa, avec description de sept nouvelles espèces. Cybium 41(1):45-66. (Ref. 116768)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00338 - 0.01553), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
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).
