Kuidas tuvastada Bleak

Kala Bleak (Alburnus alburnus) tuvastamiseks jälgi neid võtmetunnuseid.

Füüsilised omadused

Keha kuju

elongated

Värvus

Dorsal side is dark greenish-blue to olive, flanks are brilliant silvery, and the belly is white. Fins are translucent, sometimes with a yellowish tinge at the base.

Soomuse tüüp

cycloid

Suu asend

superior

Eristuvad tunnused

Highly compressed body, Large, easily detachable scales, Lateral line complete and strongly decurved anteriorly, Small, upturned mouth

Seljauim

Short, with 2-3 unbranched and 7-9 branched rays, originating behind the pelvic fin base.

Sabauim

Deeply forked, with pointed lobes.

Rinnauim

Relatively long, reaching or nearly reaching the pelvic fin base.

Eristuvad uimed

All fins are generally translucent, lacking prominent markings.

Tuvastusnõuanded

1. 1

   Body Shape and Coloration

   Look for a slender, highly compressed body with brilliant silvery flanks and a darker back. The scales are large and easily shed.

2. 2

   Mouth Position

   The mouth is small and distinctly upturned, indicating its surface-feeding habits.

3. 3

   Lateral Line

   Observe the lateral line, which is complete and noticeably curves downwards towards the belly in the anterior section.

4. 4

   Fin Placement

   Note that the dorsal fin originates behind the base of the pelvic fins.

Uuri lähemalt: Bleak