Brazil country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known only from Tapajos River, Amazon River system. Seems to be endemic to the middle to upper Rio Tapajos system (Ref. 85095).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Römer, U., I.J. Hahn and P.M. Vergara, 2010
National Database:

Common names from other countries

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Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Geophaginae
Etymology: Dicrossus: Greek, di = two + Greek, krossoi = tassel (Ref. 45335); warzeli: Named for Frank Martin Warzel, a skilled German aquarist who collected the type specimens and who first imported the species from the Rio Tapajos to Germany, as well as observed its behaviour, including reproduction in the filed and in the aquarium..

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

; Água doce bentopelágico. Tropical

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

South America: endemic to the Tapajos River, Amazon River system in Brazil.

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 6.0 cm SL macho/indeterminado; (Ref. 85095); 3.5 cm SL (female)

Descrição breve Morfologia | Morfometria

Espinhos dorsais (total): 15 - 17; Raios dorsais moles (total): 6-8; Espinhos anais 3; Raios anais moles: 6 - 7. Can be distinguished easily by its three longitudinal rows of dark grey to blackish, horizontally elongate, dash-like spots on the sides of the body; and caudal fin spatulate in adult males. Exhibits clear sexual size and color dimorphism (Ref. 85095).

Inhabits exclusively clear-water rivers. Juveniles measuring about 2.0 cm SL occur in small brooks with sandy bottoms and patches of leaf litter. Observed searching the bottom substrate for small invertebrates and detritus by picking up and turning the leaves. Collected only in very soft water (no detectable hardness) with high acidity, pH value mostly less than 4 (Ref. 85095).

Life cycle and mating behavior Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Referência principal Upload your references | Referências | Coordenador : Kullander, Sven O. | Colaboradores

Römer, U., I.J. Hahn and P.M. Vergara, 2010. Description of Discrossus foirni sp. n. and Dicrossus warzeli sp. n. (Teleostei: Perciformes: Cichlidae), two new cichlid species from the Rio Negro and the Rio Tapajós, Amazon drainage, Brazil. Verteb. Zool. 60(2):123-138. (Ref. 85095)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Preocupação menor (LC) ; Date assessed: 07 November 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless

Utilização humana

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=0.00724 (0.00283 - 0.01852), b=3.13 (2.91 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 3.2 ±0.5 se; based on size and trophs of closest relatives

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

Dicrossus warzeli Römer, Hahn & Vergara, 2010