Indonesia country information

Common names: Emperas, Engkaras, Mata merrah
Occurrence: native
Salinity: freshwater
Abundance: abundant (always seen in some numbers) | Ref: Talwar, P.K. and A.G. Jhingran, 1991
Importance: commercial | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Sumatra, Lake Tundai, South Borneo (Ref. 42107), and Java. Very common and widely distributed throughout the year, but more abundant during the dry season in Kapuas Lakes Area, western Borneo (Ref. 56749). Recorded from Danau Sentarum National Park in the Kapuas basin of Borneo, Kalimantan Barat (Ref. 56749). Museum: MZB 3063-66, 3068-3070; CAS 49194-95; USNM 230162-63 (Ref. 2091). Also Ref. 26580, 36654, 43281.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/id.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > No subfamily
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Барбус апогон, Barbel-less chemperas, Indische Flußbarbe, ... more

Main reference

Rainboth, W.J. 1996. (Ref. 12693)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 28.7 cm TL male/unsexed; (Ref. 108878); max. published weight: 340.60 g (Ref. 108878)

Environment

Freshwater; benthopelagic

Climate / Range

Tropical; 24°C - 26°C (Ref. 1672), preferred ?; 30°N - 10°S

Distribution

Asia: Myanmar to Indonesia.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

No barbels; black blotch at caudal base; rows of black spots along scale rows (Ref. 43281).

Inhabits small streams, reservoirs, lakes (Ref. 4832), canals, ditches, and generally areas with slow moving or standing water (Ref. 12693). Occurs in medium to large-sized rivers (Ref. 12975, 57235). Stomach contents are composed of fish and insect remains (Ref. 56749). Typically found around surfaces, such as plant, leaves, branches and tree roots where it browses for small plankton and crustaceans. Moves into flooded forests and non-forested floodplains. Reported to breed late during high-water season from September to October as water levels peak and begin to decline (Ref. 12693). Found in the basin-wide tributary of the lower Mekong (Ref. 36667). Common foodfish in markets (Ref. 57235).

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquarium: commercial

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
2.9 ±0.3 se; Based on diet studies.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.3)

Vulnerability (Ref. 59153)
Low to moderate vulnerability (33 of 100)

Price category (Ref. 80766)
Unknown

Cyclocheilichthys apogon (Valenciennes, 1842)