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Teleostei (teleosts) > Characiformes (Characins) > Anostomidae (Headstanders)
Etymology: Schizodon: Greek, schizein = to divide + Greek, odous = teeth (Ref. 45335).
More on author: Schultz.

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

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: rivers draining into Lake Maracaibo.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 40.0 cm SL male/unsexed; (Ref. 26543)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 12; Anal soft rays: 10; Vertebrae: 40 - 41. With 5 1/2 scales in a transverse series between the lateral line and the origin of the dorsal fin; with 5 scales between the lateral line and the origin of the anal fin; presence of three cusps on all jaw teeth; fourth blotch of dark pigmentation on the mid-lateral surface of the body is centered distinctly anterior of the vertical line through the origin of the adipose fin; relatively longer post-orbital portion of the head (0.40- 0.47 of HL); and lack of dark mid-lateral stripe; pored lateral-line scales from supracleithrum to end of lateral line 43 to 45; all scales of lateral line pored.

Adults feed on fresh leaves and grasses (Ref. 26543). Distinct pairs breed on densely grown weedy places (Ref. 205).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Distinct pairs breed on densely grown weedy places (Ref. 205).

Main reference Upload your references | References | Coordinator : Garavello, Júlio | Collaborators

Vari, R.P. and S.J. Raredon, 1991. The genus Schizodon (Teleostei: Ostariophysi: Anostomidae) in Venezuela, a reappraisal. Proc. Biol. Soc. Wash. 104(1):12-22. (Ref. 28837)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 26 March 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators

Ecology
Ecology

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvae
Larval dynamics

Distribution
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Anatomy
Gill areas
Brains
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetics
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Human related
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Strains
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Stamps, coins, misc.

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References
References

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Internet sources

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=0.01096 (0.00533 - 0.02257), b=3.06 (2.89 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.0 ±0.00 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (39 of 100).

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