Istigobius spence, Pearl goby

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

Istigobius spence (Smith, 1947)

Pearl goby

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Istigobius spence
Picture by Randall, J.E.

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Istigobius: Greek, istios = sail + Latin, gobius = gudgeon (Ref. 45335).
Eponymy: Charles Francis Spence (1907–1982) was a businessman in Mozambique, the type locality, whom Smith thanked for providing personal assistance. Spence later published: The Portuguese Colony of Moçambique: an Economic Survey (1951). (Ref. 128868), visit book page.
More on author: Smith.

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

marino; salmastro associati a barriera corallina; distribuzione batimetrica 1 - 12 m (Ref. 90102). Tropical; 15°N - 40°S

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Indo-Pacific: Mozambique, Kenya, Sri Lanka, Papua New Guinea, Australia, and Micronesia; undoubtedly more widespread.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.9 cm SL maschio/sesso non determinato; (Ref. 1602)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 7; Raggi dorsali molli (totale) : 10 - 11; Spine anali: 1; Raggi anali molli: 9 - 10; Vertebre: 26. Pectoral fin rays entire. Predorsal cycloid scale 7-10, ctenoid on trunk. Few spots on nape; a dusky line running from eye dorsal to sensory pore path, ending at or before pectoral fin base; wavy brown lines on the snout. Pelvic and distal part of anal fins darker in males than in females. Appressed anal fin reaching within a distance of 1-2 scales of caudal fin in male, 2-4 scales in female; appressed 2nd dorsal slightly overlapping caudal in male. Some males exhibit 3-4 vertical bars on abdomen and 2-3 horizontal bars in 1st dorsal fin (Ref. 420); longitudinal scale series 30-32; no scales on cheek and opercle; body depth 4.9-6.1 in SL (Ref. 90102).

Occurs in turbid coastal areas near river mouths at less than 1 m to at least 12 m, Ref. 48637.

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Genital papilla of male reaching anal spine. Female genital papilla truncate, ending well before origin of anal fin.

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Murdy, E.O. and D.F. Hoese, 1985. Revision of the gobiid fish genus Istigobius. Indo-Pac. Fish. (4):41 p. (Ref. 420)

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

Least Concern (LC) ; Date assessed: 13 March 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
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Estimates based on models

Preferred temperature (Ref. 123201): 25.7 - 29.3, mean 28.6 °C (based on 2615 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5010 [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).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Resilienza (Ref. 120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).

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

Nutrients (Ref. 124155): Calcium = 139 [69, 301] mg/100g; Iron = 0.849 [0.417, 1.558] mg/100g; Protein = 18.7 [16.7, 20.3] %; Omega3 = 0.153 [0.067, 0.292] g/100g; Selenium = 16.6 [8.1, 37.8] μg/100g; VitaminA = 145 [39, 485] μg/100g; Zinc = 2.53 [1.67, 3.75] mg/100g (wet weight);

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