Boraras naevus

You can sponsor this page

Boraras naevus Conway & Kottelat, 2011

Envoyez vos Photos et vidéos
Pictures | Images Google
Image of Boraras naevus
Boraras naevus
Picture by JJPhoto

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Danionidae (Danios) > Rasborinae
Etymology: Boraras: A name for a fish used in Borneo = "boraras merah";  naevus: From the Latin naevus, a spot, a mark on skin, a blemish, in allusion to the large sexually dichromatic blotch on the side of the body. A noun in apposition (Ref. 87760).
More on authors: Conway & Kottelat.

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

; eau douce pélagique. Tropical

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Asia: Thailand. Type locality, in a swampy area north of Surat Thani. The species is reported to have a wider distribution in the lower Tapi drainage, on the Gulf of Thailand slope of peninsular Thailand. It is suspected that most of its natural habitats (swamps) has been transformed into paddy fields. Additional populations, or another, similar species is known from the Andaman Sea slope of the Malay Peninsula near Trang (Ref. 87760).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 1.3 cm SL mâle / non sexé; (Ref. 87760)

Description synthétique Morphologie | Morphométrie

Boraras naevus is distinguished from its congeners with a similar blotched color pattern (viz. B. maculatus and B. micros) by pronounced sexual dimorphism of the anteriormost blotch situated on the body side, which is a small circular marking of roughly orbit size or smaller in females and a large dorso-ventrally orientated oval-shaped marking larger than the orbit in males (vs. anteriormost blotch similar in size and shape in both sexes) and by its lower number of principal caudal-fin rays (9+8 vs. 9+9 in B. micros, 9–10+9 in B. maculatus). It is further distinguished from B. maculatus by its lower number of body scales in the midlateral row (24–26 vs. 26–29), and its lower number of pelvic-fin rays (i.5.i vs. i.6.i), and from B. micros by its higher number of body scales in the midlateral row (24–26 vs. 22–23), higher number of branched dorsal-fin rays (7 vs. 5–6), the presence of red and black pigment along the anterior edge of the dorsal and anal fins of males in life (vs. all fins transparent without red or black pigmentation in life in both sexes), the presence of infraorbital 4 (vs. infraorbital 4 absent), infraorbital 2 contacting both infraorbital 1 and infraorbital 3 (vs. infraorbital 2 greatly reduced in size, without contact with adjacent infraorbital bones), and the presence of the mesocoracoid (vs. mesocoracoid absent). Boraras naevus can be distinguished from the remaining species of Boraras (B. brigittae, B. merah and B. urophthalmoides) by the absence of a midlateral stripe (vs. broad, uninterrupted midlateral stripe from upper extremity of gill opening to middle of caudal-fin base in B. brigittae and B. urophthalmoides; or narrow, frequently interrupted midlateral stripe from above anal-fin origin to middle of caudal-fin base in B. merah) (Ref. 87760).

Biologie     Glossaire (ex. epibenthic)

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Conway, K.W. and M. Kottelat, 2011. Boraras naevus, a new species of miniature and sexually dichromatic freshwater fish from peninsular Thailand (Ostariophysi: Cyprinidae). Zootaxa 3002:45-51. (Ref. 87760)

Statut dans la liste rouge de l'IUCN (Ref. 125652)

  Données manquantes (DD) ; Date assessed: 30 January 2013

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

FAO - Publication: search | FishSource |

Plus d'informations

Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
Stocks
Écologie
Régime alimentaire
Éléments du régime alimentaire
Consommation alimentaire
Ration
Noms communs
Synonymes
Métabolisme
Prédateurs
Écotoxicologie
Reproduction
Maturité
Frai
Rassemblement de ponte
Fécondité
Œufs
Développement de l'œuf
Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
Morphologie
Larves
Dynamique des populations larvaires
Recrutement
Abondance
BRUVS
Références
Aquaculture
Profil d'aquaculture
Souches
Génétique
Fréquences alléliques
Héritabilité
Pathologies
Traitement
Nutrients
Mass conversion
Collaborateurs
Images
Stamps, Coins Misc.
Sons
Ciguatera
Vitesse
Type de nage
Surface branchiale
Otolithes
Cerveaux
Vision

Outils

Articles particuliers

Télécharger en XML

Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Aquariums publics | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00354 - 0.01952), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
Niveau trophique (Ref. 69278):  2.8   ±0.4 se; based on size and trophs of closest relatives
Résilience
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .