Backyard Aquaponics
A place to discuss aquaponics

I had a brown comet in my pond, and bugger me if he didn't turn bright orange in the space of a week?
can goldies do that or is he something else?

Timmy, did you take any pictures?

Yep..... I've bought hundreds of bronze comets over the years and it's very common for them to colour up with some beautiful colours and markings. Vivid oranges and blacks, and all sorts of motley in betweens..

Mine always start out green, then get some black patches, then if they live long enough the black goes to orange. One of them was 1/2 black 1/2 orange and then was all orange almost overnight.

I tell ya that the gold fish farming is very long and tiring because of that, you can sell only the coloured ones so you fish the pond, sort the fish out on a wet table and put the brown ones back in the pond, grade the coloured ones and sell them. Wait a while and start again and again and again... At the end you get so pissed off by this mess that you just throw whats left in a predator pond an let them get red of fear

If you find how to make them change colour, you've found a gold mine as they are the most sold fish in the world and the first cost of the farming is to sort them out all day by workers as it can't be done by machinery. as long as they are brown or greenish they can change colour if they are silvery they won't change.

It has been noticed that it can more or less stimulated by green water.

I am sure it something in algae that give fish their colour. Or rather make it more pronounced