Threadfin shad
📖 Overview
Often schooling, occurring mainly in freshwater (in large rivers, reservoirs, lakes, and swamps). Adults prefer the presence of smooth, steep-sided surfaces such as dams, cement-lined pools and rip rapped streams . But they are also found in brackish or saline water of estuaries and bays (up to 32.3 ppt salinity ; juveniles to about 15 ppt). Larvae are pelagic probably found only in freshwater . 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 . Breed in the spring and in autumn, in freshwater, near or over plants or other objects. Eggs adhere to aquatic vegetation . Caught exclusively in fresh waters and sometimes in mouths of rivers . Also Ref. 58302.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 0; Dorsal soft rays (total): 11 - 15; Anal spines: 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 . Body bright silvery, especially on sides, opercles and underparts. Back and upper sides bluish black or dark olivaceous .: fusiform / normal; Cross section: compressed.
🌀 Behaviour
Behavioural data for Threadfin shad is currently being reviewed.
🦐 Diet
🥚 Reproduction
Breed in spring and again in autumn, in open waters near or over plants or other objects; eggs slightly adhesive . Females can produce 5,000 to 20,000 eggs depending upon their size .
🌍 Habitat & Distribution
Marine; freshwater; brackish; pelagic-neritic; anadromous ; depth range 0 - 15 m . Subtropical; 20°C - 30°C ; 42°N - 15°N, 159°W - 81°W 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.
🌿 Ecology
organic material of sand and detritus bottoms (Ref
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Threadfin shad |
| 🌍CES | dorosoma guatemalská |
| 🇩🇰Danish | Trådfinnet kråsesild |
| 🇩🇪German | Fadenflossenhering |
| 🌍LAV | Dienvidu dorosoma |
| 🇷🇺Russian | Южная доросома |
| 🇪🇸Spanish | Sardina machete amarilla · sardina maya |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Chatoessus mexicanus | Günther | 1868 | Synonym |
| Dorosoma petenense vanhyningi | Weed | 1925 | Synonym |
| Meletta petenensis | Günther | 1867 | Synonym |
| Signalosa atchafalayae | Evermann & Kendall | 1898 | Synonym |
| Signalosa atchafalayae vanhyningi | Weed | 1925 | Synonym |
| Signalosa mexicana | Günther | 1868 | Synonym |
| Signalosa mexicana campi | Weed | 1925 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 119 records indexed .
👥 Community & Contribute
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