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Phractolaemus ansorgii Boulenger, 1901

Hingemouth
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Phractolaemus ansorgii
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Gonorynchiformes (Milkfish) > Phractolaemidae (Hingemouths)
Etymology: Phractolaemus: Greek, phraktos = fence + Greek, laimos = throttle (Ref. 45335);  ansorgii: Named for the presence of 1-3 spines on the scales of the lateral line on the caudal peduncle, and on the 2 scale rows above and below the lateral line series (Ref. 93266).  More on author: Boulenger.

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

; sötvatten bentopelagisk; pH range: 6.0 - 8.0; dH range: ? - 25.   Tropical; 25°C - 30°C (Ref. 13371)

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Africa: in West Africa from Lake Nokoué (Ouémé River, Benin) (Ref. 81277) to Cross River (Cameroon) (Ref. 52397) including the Ogun, Osse and Niger Delta (Ref. 81277). Also in the middle Congo River basin (Ref. 93183) in Republic of Congo and Democratic Republic of the Congo.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm TL hane/ej könsbestämd; (Ref. 93183)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 0; Mjukstrålar i ryggfenan (totalt): 6; Taggstrålar i analfenan 0; Mjukstrålar i analfenan: 6; Ryggkotor: 34 - 38. Diagnosis: head depressed and strongly ossified; anterior nostril elongate, forming an oblique, forward-pointing tube; posterior nostril crescent-shaped, located just behind the narial tube (Ref. 2913, 81277). Mouth small, protrusible (Ref. 245, 31256, 81277), placed at tip of a proboscis and opening upwards between the narial tubes (Ref. 2913, 81277), on upper surface of snout (Ref. 245, 31256). Narrow gill opening, but opercles very well developed, covering also the underside of the head where they overlap (Ref. 2913, 81277, 93183).

Biologi     Ordlista (t.ex. epibenthic)

Lives in forest pools and swamps (Ref. 41580). Microphagous (Ref. 4910, 41580, 45483), especially phytophagous (epiphytes), and detritiphagous (Ref. 41580). Swim bladder entirely alveolar, functioning like a lung; this adaptation to aerial breathing allows the fish to survive under poor oxygenation conditions (Ref. 2913, 81277); recorded from nearly deoxygenated lungfish nest in Pool Malebo, Congo DR (Ref. 41585). Gonads, which are largely fused, are situated ventrally, not dorsally, in abdominal cavity (Ref. 41580). Mouth can be projected as a small trunk (Ref. 2913). Eggs transparent, yellow-greenish, 1.5-1.7mm diameter; large females may have several thousands of eggs (Ref. 41580). Particular blood system, with dark coloured and an abundant amouth of blood (Ref. 4910).

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

Males and females have lateral tubercles on their body which probably aid in maintaining contact during spawning (Ref. 38266).

Main reference Upload your references | referenser | Koordinator | Medarbetare

Lévêque, C., 1990. Phractolaemidae. p. 189-191. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren, and O.R.S.T.O.M.,Paris, 384 p. (Ref. 2913)

IUCN Red List Status (Ref. 120744)

  Least Concern (LC) ; Date assessed: 01 May 2009

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri:
FAO(Publication : search) | FishSource |

Ytterligare information

Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
Stocks
Ekologi
Föda
Födoslag
Födointag
Näringsinnehåll
Populärnamn
synonymer
Metabolik
Predatorer
Ekotoxikologi
Reproduktion
Könsmognad
Lek
Spawning aggregation
Fecundity
Ägg
Egg development
Age/Size
Tillväxt
Length-weight
Length-length
Length-frequencies
Morfometri
Morfologi
Larver
Larvdynamik
Rekrytering
Abundans
referenser
Vattenbruk
Vattenbruksprofil
Avelslinjer
Genetik
Allelfrekvenser
Ärftlighet
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Behandling
Mass conversion
Medarbetare
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Stamps, Coins Misc.
Ljud
Ciguatera
Hastighet
Simsätt
Gälyta
Otoliths
Hjärnstorlek
Syn

Verktyg

Special reports

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Internet-källor

Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(Go, sök) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00437 (0.00168 - 0.01136), b=3.14 (2.91 - 3.37), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  2.3   ±0.1 se; Based on diet studies.
Resiliens (Ref. 120179):  .
Vulnerability (Ref. 59153):  Low vulnerability (13 of 100) .
Price category (Ref. 80766):   Unknown.