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Golden Arowana: Morphology and Breeding Methods
The golden arowana comes mainly as the crossback and the red-tailed golden, which look alike when young but differ as they grow — the crossback's gold crosses the fifth scale row and shines brighter. Choose healthy, pure-line broodstock (one male and one female) and keep the tank completely quiet during spawning, since disturbance makes the male withhold sperm and the fish may eat the eggs.
Arowana Care Guide
Arowana have many keepers, but they are delicate and timid, so good care is not easy. Here are some daily management tips that help keep arowana healthy.
What to Keep in Mind When Changing Water for Your Arowana
Regular water changes are the first line of defense in keeping an arowana healthy, but doing it wrong can trigger refusal to eat, saprolegniasis, or cloudy eye. Proper care means pre-conditioning tap water to remove chlorine, changing only a small fraction at a time, keeping the flow gentle, avoiding feeding around the change, and watching the fish closely afterward.
How long does arowana co-habitation take to succeed?
If arowanas coexist about two months without fighting, the mix is successful. Use a powerhead and similar sizes, and separate if fighting is fierce.
How to select a silver arowana?
Observe the fish's spirit and appetite, and avoid listless bottom-sitters. Check for scale loss, eye drop, underbite, or curled fins, and pick an elegant, even swimmer.
Why Arowana Get Pinecone Disease (Raised Scales) and How to Treat It
Pinecone disease (also called raised or loose scales) is common in arowana. It can be triggered by large temperature swings, poor water quality, or internal infections such as enteritis and ascites. Mild cases often respond to the 'old three methods' — raise temperature, add salt, and partial water changes — while severe cases need antibiotics.
What is arowana drop-eye like?
Arowana drop-eye means fat bulges above the eye and the eyeball droops, staying downward. It is a common normal phenomenon but worsens with poor care, hurting its ornamental value.
Is it okay to feed arowana frozen fish?
Arowana can occasionally eat thawed frozen fish, but it should be fully thawed and excess water drained. Regularly feeding frozen fish is not recommended because it sinks and can cause the arowana's eyes to drop.
How often to feed a silver arowana?
Feed 1-4 times daily by growth stage; juveniles 3-4 times to 80% full, adults once or twice daily with small fish, shrimp, and worms for color.
How long for an arowana to recover from throwing up its stomach?
An arowana usually needs about 10 days to recover from gastric eversion. Stop feeding and change water, but wait 1 to 2 days after the event and change small amounts daily until appetite returns (about a week). Some cases have enteritis; check feces.