Come identificare Tiger Fish

Per identificare Tiger Fish (Datnioides), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

compressed

Colorazione

Typically golden to yellowish-brown base color with prominent, irregular, vertical black or dark brown bands. The number, thickness, and distinctiveness of these bands vary significantly between species and even individuals. Some species may exhibit a silvery sheen.

Tipo di squame

ctenoid

Posizione della bocca

superior

Caratteristiche distintive

Deep, laterally compressed body, Large, protractile mouth, Strong, spiny dorsal fin, Prominent vertical banding pattern, Large eyes

Pinna dorsale

Single, long dorsal fin with a spiny anterior portion (typically 12-13 spines) and a soft-rayed posterior portion (12-14 soft rays). The spiny and soft-rayed portions are deeply notched or almost separated.

Pinna caudale

Rounded to slightly emarginate caudal fin.

Pinna pettorale

Relatively small and rounded pectoral fins.

Pinne distintive

Pelvic fins are thoracic, located directly below or slightly anterior to the pectoral fins, with one spine and five soft rays. Anal fin is similar in structure to the soft-rayed portion of the dorsal fin, with 3 spines and 8-10 soft rays.

Consigli per l'identificazione

1. 1

   Banding Pattern

   The number, width, and regularity of the vertical black bands are key identifiers. For example, Datnioides microlepis typically has 5-7 bands, while D. pulcher often has 5 distinct bands, and D. undecimradiatus has 11-12 narrower bands.

2. 2

   Body Shape and Size

   Some species are more elongated (e.g., D. undecimradiatus), while others are deeper-bodied (e.g., D. microlepis). Maximum size varies significantly, from around 30 cm (D. undecimradiatus) to over 60 cm (D. microlepis, D. pulcher).

3. 3

   Scales

   The size of scales can be a differentiating factor. D. microlepis has relatively small scales, hence its name 'microlepis' (small scales).

4. 4

   Geographic Origin

   Knowing the collection locality can help narrow down species identification, as some species have distinct, non-overlapping ranges.

Esplora Tiger Fish