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Precautions for Keeping Cleaner Fish in a Community Tank
Cleaner fish help control algae and keep a tank healthy, but each species has different habits. The black-line flying fox only cleans when hungry, clown loaches may nip slow tankmates, and black mollies and kissers are peaceful. Match species to your tank size, keep water around 28°C, and do not overfeed — a well-fed cleaner fish stops working.
Which Fish Are Suitable Tank Mates for Arowana?
Arowana is large, territorial, and aggressive, so pick tank mates carefully. Relatively safe choices are tiger fish, flying phoenix, stingray, crown cichlid, and Black Spade A silver dollar - mostly bottom or mid dwellers that rarely clash with the upper-swimming arowana. Avoid very small mates that could be eaten.
Which Fish Are Suitable Tank Mates for Goldfish?
Goldfish are gentle and adapt well, suiting schooling and dense keeping with small, weak-competing fish like guppy, tetra, moonfish, angelfish, and blood parrot. Avoid large or strong feeders that outcompete the clumsy goldfish, or it may starve. Ensure space, oxygen, and stable warm temperature for tropical mates.
Why Is Your Goldfish Sitting at the Bottom of the Tank?
Goldfish sit at the bottom for many reasons — resting, stress from a new environment, low temperature, sudden water changes, or illness. If the fish perks up when the light brightens, it is just resting and needs no action. If poor water quality is the cause, change the water promptly; if it is sickness, treat the specific disease. Regular water care and stable temperatures prevent most cases.
Is Driftwood Good for a Fish Tank, and What Does It Do?
Many add driftwood only for looks, but it does more than decorate. This article covers the pros and cons so you can decide whether to use it.
Moving an Arowana to a New Tank: Precautions and Tips
Transferring an arowana to another tank is sometimes unavoidable, but done wrong it stresses the fish. Disinfect the new tank, reuse old filter media, fast the fish before netting, and observe it closely after release to help it settle.
No abnormalities, eats normally, just rubs against the tank glass
A gourami (or similar fish) rubbing its mouth and lying on the glass can be from poor water quality, low temperature, low oxygen, or spawning. Bad water (off pH, ammonia, or nitrite, or cold temperature) causes discomfort; low oxygen also triggers it; rubbing during spawning is normal. Improve water, add oxygen, and reduce disturbance - if no other signs, it is usually fine.
How Can I Make My Fish Tank Water Clear?
Clarify tank water by pre-conditioning new water, doing weekly partial water changes, using a suitable filter, avoiding overfeeding, and planting aquatic plants to absorb nutrients.
How do you disinfect and acclimate new fish before adding them to a tank?
Float the bag to match water temperature for 15-30 minutes, then slowly mix in tank water over several minutes to acclimate. Next, dip the fish in a 20 ppm potassium permanganate solution for 2-3 minutes to disinfect, observe for any reaction, then release it into the tank with 0.5% salt added to the water to reduce stress.
How do you change water in a large fish tank?
Changing water in a large tank: prepare dechlorinated water rested three days, turn off the pump, clean the glass, and siphon out bottom waste. Refill slowly along the glass.