Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobiinae
Etymology: Glossogobius: Greek, glossa = tongue + Latin, gobius = gudgeon (Ref. 45335); mahalonensis: Named for the type locality Lake Mahalona, Sulawesi..
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic; depth range ? - 2 m (Ref. 99936). Tropical
Asia: endemic to Lake Mahalona in Indonesia.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 5.7 cm SL male/unsexed; (Ref. 99936)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 7; Dorsal soft rays (total): 8 - 9; Anal spines: 1; Anal soft rays: 7 - 8; Vertebrae: 27. Glossogobius mahalonensis is distinsguished by the the following characters: absence of all head pores; mental fraenum indistinct and covered by sensory papillae; cheek naked; operculum with few embedded small scales dorsally; predorsal scaled to near eye; pectoral base scaled; prepelvic area partly scaled, naked anteriorly; second dorsal fin-rays usually I,9; anal-fin rays usually I,8; pectoral rays 14–16; predorsal scales 17–24; pelvic fin oval, length about twice width, rays not thickened; gill opening broad, reaching to a point below end of pupil to posterior end of eye; midsides with horizontally elongate small brown spots (smaller than pupil length) forming a broken horizontal line, often indistinct, not visible in dark specimens; first dorsal fin blue in life; cheek papilla lines with multiple rows of papillae, forming distinct lines (Ref. 99936).
Occurs in the shoreline of the Lake Mahalona. Found in a moderately steep inshore habitat
characterised by mangroves over gravel substrate in the shallows, turning to predominantly rocks alternating with sand and mud in about two meters depth. The habitat was also composed of submerged dead wood, especially in less than two meters depth. Occupies shallows up to about 2 meters depth, but not present in depths between 2 and 12 m, the maximum depth visited by diving at sampling site. Occurs sympatrically with other fish species which include Telmatherina celebensis, Paratherina striata, P. wolterecki, Oryzias marmoratus, Mugilogobius latifrons, M. rexi, Glossogobius intermedius and G. matanensis (Ref. 99936).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Hoese, D.F., R.K. Hadiaty and F. Herder, 2015. Review of the dwarf Glossogobius lacking head pores from the Malili lakes, Sulawesi, with a discussion of the definition of the genus. Raffles Bulletin of Zoology 63:14-26. (Ref. 99936)
IUCN Red List Status (Ref. 130435)
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=0.00708 (0.00333 - 0.01504), 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): 3.3 ±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).
