How to Identify Stripe-backed Goby

To identify Stripe-backed Goby (Stigmatogobius sadanundio), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is typically light brown to yellowish-tan, adorned with 3-5 prominent, dark, saddle-like bands or blotches across the back and sides, which extend onto the dorsal fins. The fins are often translucent with dark markings. A distinctive dark stripe or series of spots runs horizontally along the mid-lateral line, sometimes merging with the vertical bands. The eyes are relatively large and often have a dark bar running through them.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Dark saddle-like bands across the back, Horizontal dark stripe along the mid-lateral line, Two distinct dorsal fins, Pelvic fins fused into a suction cup

Dorsal fin

Two dorsal fins; the first dorsal fin has 6-7 spines, and the second dorsal fin has 1 spine and 8-9 soft rays. The first dorsal fin is often taller than the second.

Tail fin

Caudal fin is rounded to slightly truncate.

Pectoral fin

Pectoral fins are relatively large and fan-shaped, with 16-18 rays.

Distinctive fins

Pelvic fins are completely fused into a disc-like suction cup, characteristic of gobies, used for clinging to surfaces.

Identification Tips

1. 1

   Body Pattern

   Look for the characteristic dark saddle-like bands over the back and a distinct horizontal dark stripe along the side. This differentiates it from many other small gobies.

2. 2

   Fin Structure

   Observe the two separate dorsal fins and the fused, disc-like pelvic fins, which are typical of gobies. The first dorsal fin is often taller and more pointed.

3. 3

   Size

   Adults typically reach 6-8 cm (2.4-3.1 inches) in total length, making them larger than many true 'bumblebee gobies' (Brachygobius spp.).

4. 4

   Habitat (Wild)

   If observed in the wild, its presence in brackish estuarine environments is a strong indicator.

Explore Stripe-backed Goby