So bestimmen Sie Tilapia de Zill

Um Tilapia de Zill (Tilapia zillii) zu bestimmen, achten Sie auf diese Schlüsselmerkmale.

Körperliche Merkmale

Körperform

compressed

Färbung

Generally olive-green to brownish-grey on the dorsal side, fading to silvery on the flanks and whitish on the belly. During breeding, males and sometimes females develop a distinct reddish or orange coloration on the belly and lower flanks. Seven to nine dark vertical bars may be present on the flanks, often more prominent in juveniles or stressed individuals. A distinct dark spot (tilapia spot) is usually present on the upper part of the operculum.

Schuppentyp

ctenoid

Maulstellung

terminal

Besondere Merkmale

Robust, deep body, Large scales, Often reddish coloration on the belly during breeding, Dark opercular spot, Spiny dorsal fin

Rückenflosse

Long, continuous dorsal fin with 13-16 spines and 10-15 soft rays. The spiny portion is longer than the soft-rayed portion.

Schwanzflosse

Caudal fin is truncate to slightly emarginate, often with faint vertical bars.

Brustflosse

Pectoral fins are relatively short and rounded.

Auffällige Flossen

Anal fin has 3 spines and 8-11 soft rays. Pelvic fins are thoracic.

Bestimmungstipps

1. 1

   Body Shape and Size

   Look for a deep, compressed body. Adults typically reach 20-30 cm (8-12 inches) in standard length, with a maximum recorded size of about 40 cm (16 inches) and weight up to 2.5 kg (5.5 lbs).

2. 2

   Coloration

   Observe the overall olive-green to brownish-grey color, often with a silvery sheen on the flanks. The presence of a reddish or orange belly, especially in breeding individuals, is a key indicator. Look for faint vertical bars on the flanks.

3. 3

   Opercular Spot

   A distinct dark spot on the upper part of the gill cover (operculum) is usually present and can help differentiate it from some other cichlids.

4. 4

   Dorsal Fin

   Note the long, continuous dorsal fin with a prominent spiny anterior portion. Count the spines (13-16) and soft rays (10-15) if possible.

5. 5

   Caudal Fin

   The tail fin is typically truncate (straight-edged) to slightly emarginate (shallowly forked).

Tilapia de Zill entdecken