Rhinogobius red white edge 3 - (Rhinogobius sp.) — 3-4cm

Overview

The goby fish Rhinogobius sp. 'red white edge' is a striking coolwater goby with bold red-and-white edging, compact size, and fascinating territorial behavior. Available for sale UK through Tropical Fish Co, this rare freshwater goby thrives in cool, highly oxygenated aquariums and rewards dedicated aquarists with its vivid coloration and captivating personality.

Appearance

Rhinogobius sp. 'red white edge' reaches just 3–4 cm in length and displays a pale grey to tan body with striking red and white edging on the fins, particularly the dorsal and caudal fins. Males develop more intense coloration and larger dorsal fins during breeding condition. The body is compact and streamlined, with large eyes and a broad head typical of gobies. The overall appearance is delicate yet eye-catching.

Natural Habitat

This species originates from East Asia, likely freshwater streams and rivers in the China/Taiwan region, though the exact locality for this trade form remains unknown. In the wild, Rhinogobius species inhabit cool, clear, fast-flowing streams with rocky substrates, clean water, and high oxygen saturation. They shelter among rocks and pebbles, emerging to forage on small invertebrates and insect larvae.

Aquarium Setup

Provide a well-filtered aquarium of at least 60 litres with cool, highly oxygenated water and gentle to moderate flow. Use a smooth sand or fine gravel substrate and arrange plenty of rocks, caves, and hiding places to create territories. Strong filtration and excellent water quality are essential. Avoid strong currents that may stress the fish, and provide visual barriers to reduce territorial disputes.

Water Parameters

Maintain cool, clean water between 18–24°C with a pH of 6.5–7.5. Regular partial water changes (20–30% weekly) and excellent filtration are essential to keep oxygen levels high and waste products low. This species is sensitive to poor water quality and warm temperatures, requiring consistent maintenance. Avoid sudden parameter shifts and ensure the tank is fully cycled before introduction.

Feeding

Rhinogobius sp. 'red white edge' is a carnivore. Offer a varied meaty diet of live and frozen foods such as bloodworms, daphnia, brine shrimp, mysis, and small insect larvae. Many individuals will also accept quality sinking carnivore pellets or granules once acclimated. Feed small amounts twice daily, and ensure food reaches the substrate where the goby forages.

Behaviour

This goby is semi-aggressive, territorial, and mostly bottom-dwelling, spending its time perched on rocks or resting in caves. Males become particularly territorial and display brighter coloration during breeding, defending their chosen spawning sites vigorously. The goby is shy and may hide frequently if tankmates are boisterous or aggressive. It is most active during low-light periods.

Tank Mates

Species-only or with very carefully chosen coolwater tankmates that will not compete for food or territory. Avoid large or aggressive fish, fin-nipping species, highly territorial bottom dwellers, warm-water tropical species requiring higher temperatures, and very small fry or tiny shrimp. This species does best in a calm, species-specific setup.

Breeding

Males usually become territorial and display brighter coloration. They typically spawn in caves or under rocks; the male guards the eggs until hatching. Provide clean, well-oxygenated water, plenty of caves and flat spawning surfaces, and a conditioned pair. Raising fry is challenging and requires pristine water conditions and tiny live foods.

Why Buy from Tropical Fish Co

At Tropical Fish Co UK, we supply healthy, acclimated Rhinogobius sp. 'red white edge' gobies carefully selected for coloration, size, and vitality. Every fish is quarantined, inspected, and conditioned before dispatch, ensuring you receive a robust, striking specimen ready to thrive in your aquarium. With expert care advice, secure packaging, and a commitment to quality, we make adding this rare and beautiful coolwater goby to your collection simple and rewarding. Order today.