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Having never kept Rainbow fish, I want to add a group of 5 to my 40b show tank ( either Turquoise or Bosman). The filter is a Fluval 405 and it creates a good amount of water movement. Do Rainbowfish prefer little water movement or more, like I currently have?
 

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We have splendida hybrids, blehers (?), blue-eyes and Madagascars in a 150g bow-tank. There is a possibility to stay on peaceful side (low flow) and hi-flow side, they ALL spent their time hi-flow side. They spent lots of time swimming against the flow again and again and again and...

We also have neons, they prefer flow,too but maybe a bit less than bigger cousins in other tank. I dont know your filter but as long as it has a good flow, its just fine.
 

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I have Boesemani, Turquoise, Kamaka, and Red Irians and they all stay in the current from the Koralia 750. Must be like a fish treadmill :)
 
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