Changting Hillstream Loach (Pseudogastromyzon changtingensis)(2–2.5 inches)

Overview

The Changting Hillstream Loach (Pseudogastromyzon changtingensis) is a fascinating freshwater bottom-dweller, well-known for its flattened body, wide pectoral fins, and ability to cling to rocks in fast-flowing streams. Its mottled brown and golden pattern provides excellent camouflage, making it an attractive yet subtle addition to aquariums. Peaceful and unique, this species is prized for its algae-grazing behavior and unusual “mini-ray” appearance.

Size

Adult length: ~2–2.5 inches (5–6 cm).

Bottom-dwelling, clinging species adapted to fast current.

Behavior & Social Needs

• Peaceful and shy, best kept in groups of 3–6 for natural behavior.

• Occupies the bottom and glass surfaces of the aquarium, grazing on algae and biofilm.

• Excellent community fish when housed with peaceful tankmates like small rasboras, danios, and tetras. Avoid aggressive or territorial fish.

Tank Conditions

• Tank size: 20 gallons minimum (larger preferred for multiple loaches).

• Temperature: 68–75°F (20–24°C). Cooler waters preferred.

• pH: 6.5–7.5, slightly acidic to neutral.

• Setup suggestions: Strong water flow with high oxygenation, smooth rocks for grazing, fine substrate, and hiding spots. Dim to moderate lighting encourages algae growth for natural feeding.

Diet

Omnivorous (with strong preference for algae and biofilm): Grazes on surfaces but also accepts sinking algae wafers, spirulina pellets, blanched vegetables (zucchini, spinach), and small frozen/live foods like bloodworms or daphnia.

A well-varied diet keeps them healthy and active.

Lifespan & Hardiness

• Hardy when kept in a well-oxygenated, clean environment with strong current.

• Average lifespan: 8–10 years with proper care.