Sarcocheilichthys parvus – Chinese Neon Golden‑Stripe Shark (~5–7 cm)

Description

Sarcocheilichthys parvus is a petite member of the gudgeon family (Gobionidae), reaching a maximum standard length of approximately 8.7 cm, though individuals are commonly 5–7 cm . It features a striking yellowish to olive-green body with a bold, black longitudinal stripe, giving rise to its common name. Males develop vividly red (vermilion) fins during spawning, while females exhibit elongated ovipositor tubes reminiscent of bitterlings—a quirk suggesting possible mussel spawning behaviors .

This species thrives in subtropical streams of southern China, requiring no supplemental heat in indoor setups .

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Care Instructions

Tank Size: Minimum of 20 gallons (≈75 L) for a small group.

Water Parameters:

Temperature: 18–24 °C (64–75 °F)

pH: 6.5–7.5

Hardness: Soft to moderately hard

Setup: Use fine gravel substrate, gentle water flow, dim lighting, and include plants or driftwood to offer hiding spots .

Diet: Omnivore; accepts high-quality flakes, pellets, and small live or frozen foods. Due to their small mouth, feed appropriately sized food .

Behavior & Compatibility: Peaceful and sociable—best kept in groups of 5 or more. Their quick movements may overwhelm smaller tankmates .

Breeding Notes: Breeding behavior is rare but may involve mussel spawning; males develop bright fins, females show ovipositor tubes .

Maintenance: Regular water changes recommended to maintain pristine conditions; mature tanks with biofilm support natural grazing.