| Diagnostic Guide to Identifying Disease among Goldfish: Common and not so common ailments, plus problems caused by incorrect water chemistry. |
| Diseases and Medication of Angelfish: List of common ailments and recommended treatments. |
| Dr. Jungle's Animal World: Freshwater Fish Disease and Treatment: Index of various disorders, symptom and diagnostics chart, and recommended treatments. |
| Fish Diseases FAQ: Prevention, diagnosis, and treatment of common ailments. |
| FishDoc: Fish Disease Diagnosis and Treatments: In-depth information on fish diseases, complete with recommended treatments. |
| Government of Western Australia: Diseases of Farmed Goldfish and Koi: Offers an overview of internal parasite infestation, as well as gill and skin diseases. Includes photos. |
| National Fish Pharmaceuticals: Aquatic Disease Control Center: Includes a question and answer guide to diagnosis of disease, advanced diseases details, and a Koi pond section. |
| NetPets: Common Diseases Found in Fishes: Checklist, primary symptoms, afflictions and remedies. |
| Osmoregulation: Article on osmosis and osmotic stress, fish anatomy and general aquarium terms. |
| The Sick Fish Page.: Diagrams of common goldfish illnesses, and treatment suggestions. |
Classical
