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Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Eponymy: Edwin Janss Jr (1915–1989) was a Californian real estate developer, Chairman of Janss Investment Corporation, and a recreational diver. [...] (Ref. 128868), visit book page.

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

Marine; reef-associated; depth range 10 - 25 m (Ref. 87125). Tropical

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Eastern Central Pacific: Costa Rica , Panama and Mexico.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.0 cm SL male/unsexed; (Ref. 11482)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 9; Anal spines: 1; Anal soft rays: 8. This species is distinguished by the following characters: fewer second dorsal and anal-fin rays than other species; a spotted head and body; distinctive head shape, when viewed dorsally, it is narrow and compressed anterior to the eyes, broadening posteriorly due to the thick cheek muscles; males typically with a large mouth extending beyond the end of the eye (Ref. 87125).

Occurs in reefs and rock outcrops surrounded by sand (Ref. 11482). Minimum depth from Ref. 58018.

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

Main reference Upload your references | References | Coordinator | Collaborators

Allen, G.R. and D.R. Robertson, 1994. Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)

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

Least Concern (LC) ; Date assessed: 22 May 2007

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

Preferred temperature (Ref. 123201): 26.6 - 29.1, mean 28.2 °C (based on 129 cells).

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

Bayesian length-weight: a=0.00724 (0.00339 - 0.01546), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.1 ±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).

Tigrigobius janssi (Bussing, 1981)