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Use cautious guppy troubleshooting guides to check water, oxygen, stress, behavior, and other common causes before choosing the next step.

Red gills on guppies can reflect ammonia, nitrite, chlorine irritation, low oxygen, heat, parasites, or normal visible gill tissue. Use this checklist to tell what needs attention first.
| by HiGuppy Team

A guppy may hide because of new-arrival stress, bullying, unstable water, low oxygen, pregnancy, injury, or illness. Use this symptom-first checklist to find the likely cause.
| by HiGuppy Team

A swollen guppy may be pregnant, overfed or unwell. Compare several signs and check water quality before guessing.
| by HiGuppy Team

A skinny guppy may be missing food, bullied, stressed, ill, parasitized, aging, or losing condition for another reason. Use this step-by-step troubleshooting guide.
| by HiGuppy Team

Glass surfing can follow a move or reflection, or signal stress. Check the tank and other symptoms before deciding what it means.
| by HiGuppy Team

Why is your guppy not eating? Check water, temperature, breathing, bullying, food, body condition and disease signs before changing diets or medicating.
| by HiGuppy Team

Learn the signs of ammonia poisoning in guppies, why ammonia rises, what to test first, and safer steps to protect fish and the biological filter.
| by HiGuppy Team

Why guppy color fades, how to separate temporary stress from water-quality or health problems, and the first checks to make before treating.
| by HiGuppy Team

Set up a sick guppy hospital tank with stable heat, aeration and biological filtration, prevent cross-contamination, and monitor treatment safely.
| by HiGuppy Team