Lake Malawi Species • Fossorochromis rostratus

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Fossorochromis rostratus

Postby jcover » Mon Jun 07, 2021 11:49 pm

Any experience people have for when these guys start to colour up? I've heard they are slow to show their true colours..
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Re: Fossorochromis rostratus

Postby fish1234 » Tue Jun 08, 2021 10:32 am

Hi - I have 4 that I have owned from about 1.5inches (3 years ago). It turns out I ended up with 2 males and 2 females. The one male colored up at around 7.5-8 inches, while the other did not show any signs of color or being a male until around 9+ inches. They are in a tank with other haps, whom at the time were bigger than them so they were by no means the dominant fish in the tank from the start. In my experience they were very slow to color but once they started to they really pop and it is very rewarding.
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Re: Fossorochromis rostratus

Postby fish1234 » Tue Jun 08, 2021 10:49 am

Some pics:
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5D4A94AC-F730-43D7-8160-16EC8B640340.jpeg
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Re: Fossorochromis rostratus

Postby jcover » Tue Jun 08, 2021 9:55 pm

Wow! those looks great! Do you find the females have a yellow undertone to them?
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Re: Fossorochromis rostratus

Postby fish1234 » Thu Jun 10, 2021 10:00 am

Slight yellow tone, however the male that showed no color until 9+ inches looked identical to a female. I vented it and posted pictures on this website amongst others and every one said 100% certain it was a female. Once it got a bit over 9inches it quickly turned colorfully, what seemed to be overnight change.

I find them to be very entertaining fish and rewarding but require patience. Now the Pairs breed regularly with the females holding north of 60 fry at a time.
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Re: Fossorochromis rostratus

Postby gverde » Wed Jun 16, 2021 1:59 pm

I had a male a few years back. I bought him from a fellow hobbyist. He was around 10". I remember he was very aggressive with all my haps. I also did have large haps in my 220. I had him for a few years but then he must have died of old age because he started losing his color, lost a lot of weight, and just didn't move around much. He finally past. Pretty fish though.
220G All Male Hap/Peacock
125G Male "White Lips", Yellow labs, and Oreochromis esculentus
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Re: Fossorochromis rostratus

Postby fredd1e » Sat Jun 19, 2021 12:34 pm

I have a 5" rostratus. No colour yet but he gets black edges to his fins and his body goes quite dark when he gets excited :)
180G - Predator Hap tank
55G - Otopharynx Lithobates (Zimbawe Rock) tank
55G - Grow out tank
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