Goldfish Healing from Spawning Injuries: Black Blotches Indicate Recovery

Case Summary

Two fantails and a common goldfish spawned; females hid under rocks, got scraped (scale loss, white areas). One fantail recovered; the common goldfish developed black blotches on damaged areas. Owner treated with MelaFix, Stress Coat, salt, daily water changes, and bought tetracycline.

What Black Blotches Mean

**Melanophore migration** – dark pigmentation at healing wounds. It’s a **good sign**: tissue repair is underway. Not ammonia burns (which also cause black but differ in pattern).

Care Recommendations

• Use **tap water + dechlorinator** for changes (pond water has bacteria).
• Continue antibiotics (tetracycline okay; may kill good bacteria but no filter in hospital tank).
• Minimum **2 weeks quarantine**; fish must be strong enough to resist male chasing.
• Black areas don’t need to disappear before return.
• Scales regrow slowly (months).
• Feed if pellets disappear; pre‑soak for easier eating.

Key Insight

Black patches = healing, not disease. Patience and clean water are the best medicine.