Aquatics

More in Aquatics

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  Aquatics

  Understanding Septicaemia in Aquarium Fish

  Septicaemia in fish is a serious blood infection caused by bacteria such as Aeromonas, Pseudomonas and Vibrio. Common signs of septicaemia in fish include red streaks in fins, red patches or haemorrhages, swollen belly, bulging eyes, ulcers, clamped fins, lethargy, loss of appetite and difficulty swimming. If you suspect septicaemia, move the fish to a hospital tank, check and improve water quality (ammonia and nitrite must be zero), perform partial water changes, give a broad-spectrum antibacterial medication as directed, add aeration and keep stress to a minimum. Watch for reduced redness, return of appetite and better activity, but be aware that advanced cases may not recover and humane euthanasia can be kinder. To prevent septicaemia, keep water pristine, quarantine new fish for 2-4 weeks, treat wounds and infections early, avoid overcrowding and feed a balanced diet. Seek an aquatic veterinarian or experienced aquarium specialist if multiple fish are ill, fish decline rapidly or treatment does not work.

  23 June 2026

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  Aquatics

  Understanding Saddleback Disease in Aquarium Fish

  Saddleback disease is a fast-moving form of columnaris that affects aquarium fish. Caused by the bacterium Flavobacterium columnare, it shows as a pale, saddle-shaped patch across the back and can cause rapid tissue damage and death. Common symptoms include the pale band, frayed fins, redness, lethargy, loss of appetite and rapid breathing. It is contagious by contact, water and shared equipment. Treatment must start at once: isolate sick fish, improve water quality by removing ammonia and nitrite and doing partial water changes, lower temperature slightly if species allow, increase aeration and give antibacterial medication that works on Flavobacterium columnare. Remove activated carbon and follow the medicine instructions. Monitor for shrinking lesions, better behaviour and appetite. To prevent outbreaks keep water very clean, avoid overcrowding, quarantine new fish for 2 to 4 weeks, clean nets and tools and reduce stress and injury. Seek a fish vet or an experienced aquarist if many fish are sick, a fish gets worse quickly or treatment does not work.

  4 June 2026

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  Aquatics

  Understanding Mucus Production in Aquarium Fish

  This clear guide explains fish mucus and the slime coat, and what excess mucus means for aquarium fish. A healthy slime coat is thin and clear. Cloudy, thick or stringy mucus usually points to parasites, poor water quality, chemical irritation, stress, injury or infection. Look for flashing, clamped fins, rapid breathing, lethargy, loss of appetite, colour changes or white spots. If you see excess mucus, test ammonia, nitrite, nitrate and pH, do partial water changes with dechlorinated water, increase aeration, remove debris, and watch fish behaviour. Treat parasites or infections based on symptoms, reduce stress by adding hiding places and lowering light, quarantine new fish for 2–4 weeks, use fish safe products, and handle fish with wet hands or nets. Contact an aquatic vet or experienced aquarium specialist if mucus does not improve, many fish are affected or breathing is difficult.

  22 May 2026

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  Aquatics

  How to Set Up a Hospital Tank for Sick Fish

  A hospital tank is a must-have for aquarium owners. It's used to isolate and treat sick fish, protecting the main tank from disease and medication. This guide covers when to use a hospital tank, the needed equipment like a sponge filter, heater, and hiding spots, and steps for setting it up. Use medication carefully, monitor water quality, and look out for signs of recovery like improved swimming. Once healthy, return fish to the main tank. Clean the hospital tank thoroughly after use. Having a ready-to-use hospital tank boosts fish recovery and keeps your aquarium safe.

  4 May 2026