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The mbu puffer (Tetraodon mbu) is the largest freshwater pufferfish in the hobby and one of the most intelligent. It is also one of the most demanding. A full-grown mbu needs a tank of roughly 300...
If your coral is not opening, the most likely causes are a recent move or acclimation, flow that is too strong or too weak, light that is too intense or too different from where it was grown, a swing...
The lawnmower blenny (Salarias fasciatus), also called the algae blenny, is a lovable, comical grazer with expressive eyes and feathery “eyebrows.” It perches on rocks and spends the day...
Bumblebee gobies (Brachygobius species) are tiny, black-and-yellow striped fish that perch on rocks and driftwood like miniature bumblebees. They are charming, hardy once settled, and perfect for...
If your fish is hiding all the time, the most likely causes are stress from a new environment, poor water quality, a bully in the tank, or a tank that offers too little cover and too much light. Test...
Mystery snails (Pomacea bridgesii) are big, colorful, peaceful freshwater snails that keep the tank clean and are fun to watch as they glide along glass, plants and substrate. They are also one of the...
The Banggai cardinalfish (Pterapogon kauderni) is one of the most recognizable and best-loved marine aquarium fish. Its silver body, bold black bars, long trailing fins and white-spotted tail make it...
If your fish tank has green, brown or black hair-like strands growing on plants, rocks or decor, that is hair algae, and it almost always means nutrients (nitrate and phosphate) and light are out of...
The kole tang (Ctenochaetus strigosus), also called the yellow-eyed kole tang or goldring bristletooth, grazes film and detritus from reef surfaces and is generally considered reef compatible. It...
White stringy poop in fish can be an empty mucus-coated fecal cast, including between meals; its appearance alone does not diagnose parasites or constipation. Check whether the fish actually swallows...
If your test kit shows ammonia in your fish tank, investigate and start corrective measures promptly: test pH and temperature, increase aeration, and check the replacement water. A 25-50% change with...
Why is my fish lying on the bottom of the tank? Most of the time it is one of three things: poor water quality (ammonia, nitrite or a pH swing), water that is too cold for the species, or a swim...
If your fish tank water is cloudy, the cause is almost always one of four things: a bacterial bloom (milky white or grey haze), fine debris or substrate dust, a green algae bloom, or a spike in waste...
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Making Fish
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With Aquagram —
The Social Feed for Aquarium Keepers - Scroll, Scape. Share. Aquagram.