Beach salmon
| Beach salmon | ||||||||||||
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Beach salmon ( Leptobrama muelleri ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Leptobrama muelleri | ||||||||||||
| Steindachner , 1878 |
The beach salmon ( Leptobrama muelleri ; ancient Greek λεπτός leptós , German 'thin' ; old French bresme a freshwater fish) is a fish that occurs on the coasts of northern Australia from Queensland to Western Australia . It lives along the beaches and in river mouths, in the sea, in brackish water and sometimes also goes into rivers.
features
Beach salmon grow to be 35 centimeters long. Your body is elongated and flattened on the sides. The mouth extends far behind the small eyes, which have a fatty eyelid . The gill cover is sawn. The dorsal fin is short, starts behind the middle of the body and is supported by four fin spines and 16 to 18 soft rays. The anal fin has three spines and 26 to 30 soft rays. The lateral line organ stretches in an arc above the pectoral fins. It has long and narrow pores. 75 to 77 scales are counted along the lateral line organ.
Beach salmon have a silvery sheen. They can be distinguished from Leptobrama pectoralis , the second species of the genus Leptobrama , by a black spot at the distal end of the dorsal fin. Further differences between the sister species concern the morphometry . The head of the beach salmon is shorter than that of L. pectoralis (21.7 to 22.7% of the SL vs. 22.2 to 25.8%), the snout, in fish the area between the tip of the mouth and the front edge of the eyes, but longer (19.9 to 24.5% of the head length vs. 16.9 to 22.6%). The upper jaw of the beach salmon is shorter (53.0 to 61.3% of the head length vs. 61.8 to 66.1%). The palatal teeth on the vomer stand on a round field in the beach salmon, in L. pectoralis the toothed area is rhombic. In the beach salmon, the tips of the pectoral fins extend to the tips of the attached pelvic fins, in L. pectoralis they extend a little further. On the front body above the pectoral fins, the side line of the beach salmon runs gradually and curved downwards, in L. pectoralis it falls off in stages. Below the sideline, the beach salmon has 13 to 14 rows of scales, in L. pectoralis there are 15 to 18. Beach salmon have 13 to 18 short gill rakes , L. pectoralis only 6 to 12.
Individual evidence
- ^ Joseph S. Nelson : Fishes of the World. Wiley, New York 2006, ISBN 0-471-25031-7 .
- ↑ Seishi Kimura, Teguh Peristiwady & Ronald Fricke. (2016): Taxonomic review of the genus Leptobrama Steindachner 1878 (Perciformes: Leptobramidae), with the resurrection of Leptobrama pectoralis (Ramsay and Ogilby 1887). Ichthyological Research, February 9, 2016.
Web links
- Beach salmon on Fishbase.org (English)
- Family Leptobramidae - Beachsalmon on Fishbase.org (English)