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Discussion regarding only Lake Malawi species.
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Using a Hap to cull fry?

Wed Feb 19, 2020 7:38 pm

I need a way to cull excess fry in my Mbuna tank. I’ve got too many babies! And I’m tired of fishing them out and culling the ones that don’t get eaten. A friend of mine uses a venustus in his tank to eat the fry. Has anyone had success using haps like this?

Re: Using a Hap to cull fry?

Wed Feb 19, 2020 7:45 pm

I think small fry might be too good at hiding in the small cracks and holes, where the venustus can't get in...
However a group of synodontis would do some damage control.

Re: Using a Hap to cull fry?

Wed Feb 19, 2020 7:53 pm

Agreed Synodontis multipunctatus is ideal...a group of five. They get the fry at night when they are sleeping. The haps sleep at night too so not as effective.

Re: Using a Hap to cull fry?

Wed Feb 19, 2020 8:23 pm

How big do they get?

Re: Using a Hap to cull fry?

Wed Feb 19, 2020 9:43 pm

Eight inches? Certainly smaller than a venustus.

Re: Using a Hap to cull fry?

Thu Feb 20, 2020 11:12 am

Wow!! do you need 5 of them to do fry control? I have never had any of these catfish full grown but I do have 3 juveniles growing out. How big is your tank Cheeky?

Re: Using a Hap to cull fry?

Thu Feb 20, 2020 6:41 pm

You need five to keep the Syno's happy, they are social and hide if you don't have enough individuals.

You can do 5 multipunctatus in a 55G. Mine are in the 72" tank.

Re: Using a Hap to cull fry?

Thu Feb 20, 2020 7:00 pm

140 g 72 inches long, really rocky decor

Re: Using a Hap to cull fry?

Sat Feb 22, 2020 12:11 am

DJ - not to get off topic, but how old and big are your multipunctatus?

Re: Using a Hap to cull fry?

Sat Feb 22, 2020 10:02 am

The age is difficult because they were caught in the wild and you are starting off not knowing how old they are. The previous owner had them for seven years. I have had them for 10 years. I have not measured but guessing between 6-7 inches.

Re: Using a Hap to cull fry?

Tue Feb 25, 2020 1:30 am

jcover wrote:DJ - not to get off topic, but how old and big are your multipunctatus?


I received a wild pair in 1981. The male grew to 8", and passed away in 2016.

They spawned... a lot... I have three left from a 1986 spawning... biggest is only about 6" though.
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