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Dorosoma petenense in Hawaii (USA)
Threadfin shad

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Dorosoma petenense   (Günther, 1867)
Family:	Clupeidae (Herrings, shads, sardines, menhadens)			picture (Dopet_u0.jpg) by The Native Fish Conservancy
Order:	Clupeiformes  (herrings)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Threadfin shad
Max. size:	22.0 cm SL (male/unsexed; Ref. 7251); max. reported age: 4 years
Environment:	pelagic-neritic; anadromous ; depth range 0 - 15 m
Climate:	subtropical; 2 - 35°C; 42°N - 15°N
Global Importance:	fisheries: minor commercial; bait: usually
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (tm=1-2; tmax=4; Fec=800)
Distribution:	North and Central America: Gulf of Mexico drainage, Mississippi system, from the Ohio River of Kentucky and southern Indiana southwest to Oklahoma, and south to Texas and Florida, also rivers around the Gulf to northern Guatemala; also Belize River, British Honduras.
Diagnosis:	Dorsal spines (total): 0-0; Dorsal soft rays (total): 11-15; Anal spines: 0-0; Anal soft rays: 17-27; Vertebrae: 43-44. Body moderately deep; belly with 15 to 18 + 8 to 12 scutes. Mouth small. Last dorsal fin ray long, about equal to distance from snout tip to mid-pectoral fin or beyond; anal fin relatively short. Scales relatively large, regularly arranged. A dark spot behind gill opening. Gill rakers fine and numerous (Ref. 188). Body bright silvery, especially on sides, opercles and underparts. Back and upper sides bluish black or dark olivaceous (Ref. 37032).
Biology:	Often schooling, occurring mainly in freshwater (in large rivers, reservoirs, lakes, and swamps). Prefer the presence of smooth, steep-sided surfaces such as dams, cement-lined pools and rip rapped streams (Ref. 39049). But adults are also found in brackish or saline water of estuaries and bays (up to 32.3 ppt salinity (Ref. 39050); juveniles to about 15 ppt). Larvae are pelagic probably found only in freshwater (Ref. 39046). Filter-feeders, but not entirely herbivorous since recorded food items include copepods, cladocerans and fish fry. Also feed on organic material of sand and detritus bottoms (Ref. 9114). Breed in the spring and in autumn, in freshwater, near or over plants or other objects. Eggs adhere to aquatic vegetation (Ref. 4639). Caught exclusively in fresh waters and sometimes in mouths of rivers (Ref. 9291). Also Ref. 58302
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Whitehead, P.J.P.. 1985. (Ref. 188)
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Hawaii (USA) country information
Common names:	Threadfin shad		Ref:  Yamamoto, M.N. and A.W. Tagawa, 2000
Status:	introduced		Ref:  Randall, J.E., 1987
Salinity:	freshwater, brackish, marine
Uses:	bait: yes
Comments:	Known from Hawai'i Island to Kaua'i (Ref. 58302). Introduced to Hawaii to provide bait for the skipjack tuna fishery and to serve as forage to introduced freshwater gamefish like the largemouth bass; abundant in the Wahiawa Reservoir in Central O'ahu (Ref. 44091). Also in Ref. 9419 and 13364.
Country Information:
Occurrences:	Occurrences    Point map
Main Ref:	Yamamoto, M.N., 1992
Update

More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Identification keys | Length-frequency Wizard | Life-history tool | Point map |
Internet sources:	Alien/Invasive species database | BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | National databases | PubMed | Recipes | Scirus | Tree of Life | Zoological Record Other web sites |
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	Checked:  Yamamoto, Mike N.	Modified:  Ortañez, Auda Kareen	Entered:  Welcomme, Robin L.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07