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How to keep gouramis

Male dwarf gourami

Gouramis are one of the most popular groups of aquarium fish. They are widely available, cheap and offer graceful swimming, colour and a centrepiece fish to the community aquarium. Gouramis can be told apart from other fish by their high bodies and thread-like ventral fins that they use as sensory organs. All gouramis are Anabantoids or Labyrinth fish, meaning that they possess breathing...

Can I put Sterlet and Sturgeon in my pond?

Sterlet and Sturgeon are very popular because of their prehistoric, shark-like looks and the way they stick their noses out of the water, but there are a few things you need to know about them before you add one to your pond. How big do they grow?Most Sterlet grow to 36”/90cm in length, but Sturgeon can grow a lot bigger and pond owners have achieved lengths of five feet or more. S...

Why are my corals dying?

Corals are marine animals which need light, water and food but if you’ve got all that and they’re still dying, here’s what to look for and remedy, along with some essential checks:Check that the power is onIs the tank plugged in and switched on? Has the power tripped or is there a power cut? Check that your return pump and wave-making pumps are running. Along with skimmer, reactors ...

What are Flowerhorn cichlids?

Flowerhorn cichlids are hybrid Central American cichlids, also known as Louhan in Asia. One or more of the original parent species was Amphilophus trimaculatus, and that’s the species that they most closely resemble, and behave like. They are tropical freshwater fish that originated in fish farms in South East Asia, and its in Asia that they are most popular.They are so-called because of t...

How to keep rainbowfish

Rainbowfish are tropical freshwater fish so named because of the variety of bright colours displayed by mature males. They originate from Australia, Papua New Guinea and Indonesia and inhabit streams, rivers, lakes and marshlands.Rainbows are popular aquarium fish and Red, Blue, Boesemani and Neon dwarf rainbows are common in most aquatic stores. Although usually seen as plain, washed-out ju...

Five aquarium fish you never knew grew so big

Everyone knows that Common plecs and Oscars get big, but there are several other, commonly sold species which also belong to the foot-long club.Silver Shark, Balantiocheilus melanopterusA mainstay of the tropical fishkeeping hobby, Silver sharks are peaceful and easy to keep. The downside is their maximum size of 14”/35cm which they can and do achieve, even in average sized aquariums. T...

How to breed pond fish

Have your pond fish being chasing each other and splashing around lately? They’re probably spawning. Most of the fish species available to pond owners in the UK can be bred, and most breed in the same way. Goldfish (including shubunkins and Sarasa comets,) Koi, Tench, Orfe and Rudd are all egg scatterers.Summer temperatures warm pond water and the female’s bellies start to swell up with ...

How to reduce nitrates in a marine tank

Nitrates are produced as a byproduct of biological filtration. Ammonia (NH3) is converted by nitrifying bacteria first into nitrite (NO2) then into nitrate (NO3). Fish produce ammonia constantly and if the tank is mature, beneficial bacteria constantly convert ammonia into nitrate, which then builds up over time. The nitrate level in the ocean is about 0.42mg/l which is very low to negli...

I want to start fishkeeping. What do I need to know?

Fishkeeping is the best hobby in the world, but there are some rules you need to follow if you want to be successful:Mature the tank firstYou can’t put all the fish you want into the tank in one go. Fish create waste and that waste is poisonous to them. Its not just about fish poo, they also release ammonia from their gills which is invisible, but very toxic. The saying is that you don...

Aquarium chillers explained

In hot British summers, water temperatures can rise too high even for tropical fish, so we use a chiller to keep the temperature down. Warm water holds less oxygen so in a heatwave the effect is three-fold, by stressing the animals, increasing their breathing but also lessening the amount of dissolved oxygen that’s available to them in the water.In marine tanks, corals can really suffer in ...

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