| প্রধান রেফারেন্স। | Turner, J.L., 1966 |
|---|---|
| মন্তব্য সমূহ | Inhabit streams and lakes (Ref. 10294). Survive in the cool areas of some highland dams where they were introduced as sporting fish (Ref. 4967). Introduced in Europe since 1883. Prefer warm waters of 27°C (Ref. 11273) and occur in small shallow lakes (maximum depth of 6 m) or in shallow bays of big lakes. Rarely found in big rivers (Ref. 11243). Juveniles feed mainly on invertebrates, plankton and insect larvae (Ref. 10294, 11243); individuals from 5 cm TL become almost exclusively piscivores but also feed on frogs and some crustaceans. These are dusk and dawn feeders, feeding in schools chasing their prey near the surface and in zones with vegetation. Feeding slows down in winter and during spawning (Ref. 11243). Preyed upon by herons, bitterns, and kingfishers (Ref. 1998). |
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
|
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|
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| সাবস্ট্রেট | |
|---|---|
| সাবস্ট্রেট রেফারেন্স। | |
| বিশেষ আবাসস্থল | |
| বিশেষ আবাসস্থল রেফারেন্স। | Halwart, M. and M.V. Gupta, 2004 |
| সূত্র | |
|---|---|
| সমিতি | |
| এর সাথে সম্পর্কিত | |
| সমিতির মন্তব্য | |
| পরজীবীতা |
| খাওয়ানোর ধরণ | mainly animals (troph. 2.8 and up) |
|---|---|
| খাওয়ানোর ধরণ রেফারেন্স। | Turner, J.L., 1966 |
| খাদ্যাভ্যাস | hunting macrofauna (predator) |
| খাওয়ানোর অভ্যাস রেফারেন্স। | Turner, J.L., 1966 |
| Estimation method | মূল নমুনা | অমাৎস্য প্রজন | মন্তব্য | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| খাদ্যউপাদান হইতে | 3.84 | 0.40 | 3.86 | 0.63 | Troph of juv./adults from 1 study. |
| পৃথক খাদ্য সামগ্রী হইতে | 4.42 | 1.06 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| সূত্র | Turner, J.L., 1966 | ||||