How to Identify Hillstream Loach

To identify Hillstream Loach (Garra mullya), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Typically olive-brown to greyish-brown on the dorsal side, fading to a lighter, often yellowish or whitish, ventral side. May exhibit faint darker blotches or a lateral stripe, especially when young. Fins are generally translucent or slightly dusky.

Scale type

cycloid

Mouth position

inferior

Distinctive features

Ventral suctorial disc formed by the modified lower lip and mental disc, allowing adhesion to surfaces., Pair of barbels at the corner of the mouth and another pair on the snout., Relatively flattened ventral surface.

Dorsal fin

Single dorsal fin, typically with 8-10 branched rays, originating slightly anterior to the pelvic fins.

Tail fin

Forked caudal fin with rounded lobes.

Pectoral fin

Large, horizontally oriented pectoral fins, often used in conjunction with the suctorial disc for gripping surfaces.

Distinctive fins

Pelvic fins are also horizontally oriented and contribute to the adhesive mechanism.

Identification Tips

1. 1

   Suctorial Disc

   The most prominent feature is the well-developed ventral suctorial disc, formed by the lower lip and a mental (chin) disc, which is used for adhesion to rocks in strong currents. This distinguishes it from many other cyprinids.

2. 2

   Barbels

   Presence of two pairs of barbels: one rostral pair (on the snout) and one maxillary pair (at the corner of the mouth).

3. 3

   Body Shape

   Elongated, somewhat flattened ventral profile, adapted for benthic life in flowing water.

4. 4

   Fin Orientation

   Horizontally oriented pectoral and pelvic fins, which aid in maintaining position against currents.

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