Tanzania (United Republic of) country information

Common names: Dagaa
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: highly commercial | Ref: Eccles, D.H., 1992
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Lake Victoria. Pelagic. This species has recently become very important as the basis of a large commercial fishery and is now the second most important species in Lake Victoria (Ref. 4967, 33811). Also Ref. 13624.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/tz.html
National Fisheries Authority: https://www.isp.msu.edu/AFRICANSTUDIES/PLEA/TAFIRI.HTM
Occurrences: Occurrences Point map
Main Ref: Eccles, D.H., 1992
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Danioninae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Sardine, Mukene, Lake Victoria sardine, ... more

Main reference

Lévêque, C. and J. Daget. 1984. (Ref. 2801)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 9.0 cm SL male/unsexed; (Ref. 4967)

Length at first maturity
L_m 4.4 range ? - 4.7 cm

Environment

Freshwater; pelagic; depth range 50 - ? m (Ref. 34290)

Climate / Range

Tropical; 22°C - 26°C (Ref. 13614), preferred ?; 2°N - 7°S

Distribution

Africa: known from Lake Victoria drainage, Lake Kyoga, Lake Nabugabo and the Victoria Nile (Ref. 4903).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Lateral line low on the body and running along the lower part of the caudal peduncle. Cheek covered by thin suborbital bones. Silver with an overall nacreous sheen. Caudal fin yellow. Dead specimens with a distinct mid-lateral stripe (Ref. 34290).

Highly adapted to pelagic life (Ref. 12526). Found inshore and offshore (Ref. 34290). Known from the surface of inshore and coastal waters; some records from surface waters over great depth (Ref. 4903). Adults stay near the bottom during the day and near the surface at night (Ref. 34291). Juvenile fish migrate away from the shore after spending their larval stage in shallow areas (Ref. 33811). In Lake Kyoga occurring in open water away from water-lily swamps; in Victoria Nile caught in turbulent regions (Ref. 4903). Feed on zooplankton and surface insects (Ref. 4903, 12526) and eaten by birds and siluroids, Schilbe mystus, Clarias gariepinus and Bagrus docmak (Ref. 12526). Mature individuals spawn in the lake and produces floating eggs (Ref. 52061).

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

Threat to humans

Harmless

Human uses

Fisheries: highly commercial; bait: usually

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

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.4 ±0.49 se; Based on food items.

Resilience (Ref. 69278)
High, minimum population doubling time less than 15 months (K=0.9-1.0)

Vulnerability (Ref. 59153)
Low vulnerability (14 of 100)

Price category (Ref. 80766)
Unknown

Rastrineobola argentea (Pellegrin, 1904)