Furcatus rainbowfish care and discussion

[Lexat]

Just checked with my LFS and they've got these gorgeous fish in stock. Seriously Fish does suggest they thrive in hard water, doesn't it?

[Snout]

You're on the right track with that, a lot of the rainbowfish species, not all of them, tend to do better in harder water.

[coltin]

Keeping the water on the harder side is beneficial for them, a GH of 200ppm, give or take a bit, seems to work well - anywhere between 150-300ppm is fine.

A good rule of thumb is to aim for a group of 8-10, and if you can, try to get a few more females than males - they don't produce many eggs, only around 1-2 per day.

[Lexat]

Keeping the water on the harder side is beneficial for them, a GH of 200ppm, give or take a bit, seems to work well - anywhere between 150-300ppm is fine.

A good rule of thumb is to aim for a group of 8-10, and if you can, try to get a few more females than males - they don't produce many eggs, only around 1-2 per day.

Those rainbowfish did look incredible. My tap water is hard, 15 GH, but I'm actually setting up a new tank that's mostly RO - it's around 5 or 6 GH. Not ideal for them, I know.

[coltin]

I'd consider a 50/50 mix of RO and tap water to get the GH to around 10-11, that should be more suitable for them.

[Lexat]

Keeping the water on the harder side is beneficial for them, a GH of 200ppm, give or take a bit, seems to work well - anywhere between 150-300ppm is fine.

A good rule of thumb is to aim for a group of 8-10, and if you can, try to get a few more females than males - they don't produce many eggs, only around 1-2 per day.

Will I need to add some minerals back in if I go above the 50/50 mix?