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> Characiformes (Characins) > Characidae (Characins; tetras) > Aphyoditeinae
Etymology: marajoara: Name refers to the type locality, Marajó Island, Brazil. An adjective..

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

; sötvatten bentopelagisk. Tropical

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South America: Marajó Island, Brazil.

Size / Vikt / Age

Maturity: L_m ? range ? - ? cm
Max length : 2.1 cm SL hane/ej könsbestämd; (Ref. 94718)

Short description Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt): 10-11; Ryggkotor: 31 - 33. This species differs from all members of the genus Tyttobrycon by the possession of tricuspid premaxillary teeth, tri- or pentacuspid maxillary teeth and four broad tricuspid anterior dentary teeth (vs. all teeth conical in the jaws). It can be further diagnosed from all congeners, except T. dorsimaculatus, by having 5-7 premaxillary teeth (vs. 8-9), and from T. dorsimaculatus by having only scattered melanophores on the dorsal fin (vs. dorsal fin with a conspicuous black spot). The presence of adipose fin separates this species from T. hamatus and T. spinosus (vs. adipose fin absent) (Ref. 94718).

Collected from temporary streams, drying completely during the dry season (September to February) and flowing on the rainy season (March to August). Small groups of adults were found on the bottom and marginal portions of the streams in April. Juveniles in large schools were collected along the bottom of the stream in August (Ref. 94718).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

Marinho, M.M.F., D.A. Bastos and N.A. Menezes, 2013. New species of miniature fish from Marajó Island, Pará, Brazil, with comments on its relationships (Characiformes: Characidae). Neotrop. Ichthyol. 11(4):739-746. (Ref. 94718)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 07 November 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 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trofisk nivå (Ref. 69278): 3.0 ±0.4 se; based on size and trophs of closest relatives

Resiliens (Ref. 120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).

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

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Tyttobrycon marajoara Marinho, Bastos & Menezes, 2013