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> Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); cocibolca: Named for Lake Cocibolca, the indigenous name for Lake Nicaragua; noun in apposition..

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

; acqua dolce pelagico; distribuzione batimetrica ? - 2 m (Ref. 83537). Tropical

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

Central America: endemic to Lake Nicaragua.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.4 cm SL maschio/sesso non determinato; (Ref. 83537)

Short description Morfologia | Morfometria

The semipelagial Astyanax cocibolca can be readily separated from the A. aeneus that inhabits some of the same habitats in Lake Nicaragua by its slender body 29.1-36.4% SL (vs. 33.9-39.3% SL); with slightly upturned mouth; high total gill raker count 23-34, mean 28.9 (vs. 22-26, mean 24.1); reduced size of dentary teeth; fewer scale rows above lateral line 6-8, mean 7.2 (vs. 8-9, mean 8.3); more intense black midlateral band; smaller size, maximum 54.3 (vs. greater than 80 mm SL); conical teeth in outer row of premaxillary bone (vs. only tricuspid outer row teeth) (Ref. 83537).

This filter-feeding specialist utilizes the open-water habitat, at least as a nursery where young can feed on the rich plankton population. Two small adults from the open water habitat contained 90% copepoda and cladocera while inshore specimens contained 90% fruit, 5% cladocera, 5% seed, algae. The adult female from open water contained ripe eggs, although 10 adult females from inshore sites contained only undeveloped eggs (Ref. 83537).

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

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Bussing, W.A., 2008. Astyanax cocibolca, a new characid (Pisces: Ostariophysi) from Lake Nicaragua, Central America. Revista de Biologia Tropical 56 (3):1361-1370. (Ref. 83537)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 08 November 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

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Metabolismo
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Fecundity
Uova
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Age/Size
Accrescimento
Length-weight
Length-length
Length-frequencies
Morfometria
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Larve
Dinamica popolazioni larvali
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Abbondanza
BRUVS

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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.9 ±0.4 se; based on size and trophs of closest relatives

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

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Astyanax cocibolca Bussing, 2008