Happy Lucky Fish Club

Disclaimer (read this): This site is a hobbyist synthesis — drawn from product labels, books, and experienced keepers. It is not veterinary diagnosis or a prescription. Species differ. Verify every dose on the current product label. Weigh salt on a kitchen scale (teaspoons are a last resort). When fish crash, parasites are unclear, injectables or culture are needed, or mycobacteria is on the differential — escalate to an aquatic veterinarian. Full text on the About / Disclaimer page.

Practical freshwater hobbyist reference. Not a vet clinic.

Start here if a fish looks wrong: Sick fish guide — water first, then symptoms, then cards and protocols.

Varieties

Tosakin: parts diagram

How to read a tosakin (土佐錦魚) from above: I name every part in English and Japanese and explain what judges look for. Open the tosakin guide · see it as a hologram

Ranchu: parts diagram

How to judge a ranchu (らんちゅう) from above and from the side, with every part named in English and Japanese. Open the ranchu guide · see it as a hologram

Oranda: head types, body and tail

How to tell a good oranda: hood, body, and tail, plus the main types you’ll see. Open the oranda guide · see it as a hologram

Chinese goldfish variety tree

How Chinese breeders sort their goldfish (中国金鱼品种图), from body type down to each variety and its crosses, in Chinese, pinyin, and English. Open the variety tree

Site map

Sick fish — first response, quarantine, symptom index, when to stop / escalate
Diseases — parasite and disease cards + parasite ID table
Treatments — supportive care, dips, wounds, heat notes, meds notes, salinity table (g/gal preferred)
Protocols — quarantine, new fish acclimation, ich, flukes, dips
Medications — one entry per medication: doses per liter and per US gallon, what not to combine, conversion tables
Starter kit — what to have on the shelf: buckets, salt, scale, test kit, medicine chest; quarantine without a cycled filter
Tosakin — top-view diagram with part names (English / 日本語 / romaji), ideal circle, tail-attachment angle
Ranchu — top and side diagram with part names (English / 日本語 / romaji), back line and tail attachment
Oranda — name and history, regional types, head (hood) types, body, tail and colours
Variety tree — Chinese goldfish varieties by trait group, with crosses (中文 / pinyin / English)
Cross calculatorNew — expected fry ratios for scale type, telescope eye, and albino, plus the traits no calculator can predict
Salt calculator — how much plain salt to add for a target ppt or specific gravity, in grams, tablespoons, and cups, with safe-range warnings
Volume calculator — gallons and liters from inches or a standard tank size, plus heater wattage for a 10°F rise
The Tosakin, the Fish Food Bag, and David Salazar — how a Japanese Tosakin line got from a fish food bag to my tanks
About / Disclaimer — what this is, what it is not, salt scale note, gaps

Salt, in one line

Use a kitchen scale. Target 0.1% = 1 ppt = 1000 ppm ≈ 3.8 g salt per US gallon. Teaspoons are approximate only — last resort if you have no scale. Full table on Treatments.

What you will not find here

Folk remedies (no floating garlic, no “floating food makes fish float” superstition)
Private necropsy reports, lab names, case IDs, or tank IDs
Invented medical claims — we organize existing hobbyist notes and flag contradictions

Happy Lucky Fish Club