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Amazon spinejaw sprat (Rhinosardinia amazonica) fish species and information / pictures of Amazon spinejaw sprat - Rhinosardinia amazonica
Amazon spinejaw sprat (Rhinosardinia amazonica) fish species information
Scientific Name
Rhinosardinia amazonica
Common Name
Amazon spinejaw sprat
Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 13-21; Anal spines: 0; Anal soft rays: 15 - 18. Belly strongly keeled; two distinct parallel striae on scales; a silver stripe along flank in some specimens. Easily separated from all other clupeids in the area by the sharp retrorse spine on the upper part of the maxilla at about the level of the eye center. Distinguished from the very similar R. bahiensis mainly by having fewer vertebrae (38 or 39) and fewer scales in lateral series (Ref. 188). Body silvery, head yellowish white (Ref. 37032).
Classification
Classified By
Steindachner, 1879
Class
Ray-finned fishes (Actinopterygii)
Order
Herrings (Clupeiformes)
Family
Herrings, shads and sardines (Clupeidae)
Distribution
Region
South America
Distribution
South America: lower reaches of the Orinoco, rivers of the Guianas, Amazon at Par?, but undoubtedly elsewhere in its lower part.
Range
10°N - 8°S, 69°W - 47°W
Environment
Climate
Tropical
Water Temperature From
Unknown
°C
Water Temperature To
Unknown
°C
Depth From - meters
Unknown
m
Depth To - meters
Unknown
m
Zone
pelagic
Environment
Freshwater; brackish; pelagic
Trophic Level
3.4 s.e. 0.45 Based on food items.
Occurs in Marine / Salt water
False
Occurs in Brackish water
True
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False
Physical Size and Genetics
Maximum Length
8.0
cm
Common Length
5.0
cm
Phylogenetic Diversity Index
PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Human Uses and Population
Human Uses
Fisheries: subsistence fisheries
Vulnerability
Low vulnerability (11 of 100)
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Threat To Humans
Harmless
IUCN Red List Status
Not Evaluated