CPD Fry

JM155

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Joined
22 Oct 2018
Messages
30
Location
Suffolk
Hi all

I have been keeping CPDs in my 57l Dennerle Scaper’s tank for a few months now. Out of the blue, I found a couple of fry in the tank. I had a spare 30l nano cube in the garage so set that up quickly. I was able to find one of the fry and move him into the nano cube.

It was absolutely tiny, around the size of an eyelash. I have never raised fry before but would love to keep him/her alive and be able to look after any others going forward.

Does anyone have any advice on looking after CPD fry? Mainly thinking food wise? I am pretty sure the CPDs caused my Red Cherry Shrimp population to fall in a big way, so don’t trust them with anything that is small and moves!

Thanks in advance.
 

Simon Cole

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Joined
25 Dec 2018
Messages
470
Location
Buckingham
Infusoria, paramecium, nematodes (walter worms, vinegar worms, micro worms etc.) and cyclops.
I have an amazing diversity of small organisms that colonise my new tanks, including detritus worms, ostracods, tubifex worms, and cyclops - so basically I always have a tank free to offer to fry. If you can set up a few tubs with plants in them on your window sill, then you'll probably get some nice natural cultures too. I add pollen into my tanks to encourage healthy quantities of these organisms.
 

Majsa

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Joined
26 Apr 2017
Messages
220
Location
The Netherlands
I had a small breeding project this winter. I have these 7 swimming in their parents' tank now, they are doing well. Food wise, they need to be fed a lot when they are tiny, maybe up to 6-7 feedings per day depending on what they get and how established the tank is. The first two weeks are the hardest, I lost ±50% of the fry on the second week most likely due to not feeding them enough :oops: They took:
Infusoria (but I started the culture when the eggs were laid so late) and some JBL NobilFluid from free swimming
Vinegar eels after ±4 days
Microworms after ±10 days
BBS, powdered dry food etc. after ±2 weeks
I hope this helps, they are such lovely fish! I see an odd fry in the CPD tank once in a while now, but they don't survive there :( Maybe you can try a moss trap for collecting eggs?
 

DianeC

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Joined
1 Dec 2018
Messages
52
Location
High Peak
I had a similar dilemma with some WCMM fry. Went to my ( now gone) LFS who recommended Interpet Liquifry No 1 for the first week followed by finely ground flake food. I managed to raise most of the fry in a breeding cage inside my Spec V. 19 litres before moving them to a recently purchased bigger tank. You can buy it on Amazon ( after the dog pinched and ate the first one!)
 

Monkfish

Member
Joined
8 Mar 2019
Messages
168
Location
Basingstoke
Sorry, not meaning to hijack this thread, but I have some CPD fry growing on too and wondered at what point is it ok to add them to the main tank? Is it just a case of waiting for them the be bigger than the largest mouth? haha.
 

Majsa

Member
Joined
26 Apr 2017
Messages
220
Location
The Netherlands
Mine joined the parents at 12 weeks, but I don't think you have to wait that long. Just wanted to be sure they are OK with 1-2 feedings per day.
 
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