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Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobionellinae
Etymology: Mugilogobius: Latin, mugil, -ilis = grey mullet + Latin, gobius = gidgeon (Ref. 45335); rexi: Named for Rex Williams.
Eponymy: Rex Williams is a technical officer at the Museum and Art Gallery of the Northern Territory in Darwin, Australia. He was honoured for his: “…careful work and commitment” to the museum’s fish collection. (Ref. 128868), visit book page.
More on author: Larson.

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

Freshwater; benthopelagic. Tropical

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

Asia: restricted to Sulawesi, Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.3 cm SL male/unsexed; (Ref. 43716)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 8 - 9; Anal spines: 1; Anal soft rays: 7 - 9; Vertebrae: 27 - 28. Live color yellow for male yellowish grey for female (Ref. 43716). Longitudinal scales 37-30; TRB 8-10; predorsal scales 11-19; scales on nape reaching nearly up to eyes or past preopercular edge; vertebrae modally 11+16; below the eye often with about 6 short rows of transverse papillae, transverse rows sometimes developed as part of longitudinal rows c and cp (Ref. 43716). Caudal fin rounded to slightly truncate (Ref. 43716).

Facultative air-breathing in the genus (Ref. 126274); Hovers above the substrate, in a slightly diagonal position, with caudal fin curved to one side. Inhabits water at least a meter's depth, over silty substrate, near clumps of aquatic plants and the freshwater mangrove Barringtonia racemosa (Ref. 43716).

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

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Larson, H.K., 2001. A revision of the gobiid fish genus Mugilogobius (Teleostei: Gobioidei), and its systematic placement. Rec. West. Aust. Mus. (Suppl. No. 62):1-233. (Ref. 43716)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Near Threatened (NT) (B1b(iii)+2b(iii)); Date assessed: 14 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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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=0.00977 (0.00444 - 0.02153), b=3.04 (2.85 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.3 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).

Mugilogobius rexi Larson, 2001