Tank Eheim Vivaline 240 l, heater Hydor ETH 300, filter Eheim professionel 3 350

Plan: mangrove river estuary, SG 1.002


2 Toxotes Microlepis (Archerfish), 6 Melanotaenia Boesemani (Rainbowfish), Neritina Natalensis (Zebra Nerite), Clithon Corona

Mangrove environments around the world

Thursday 8 December 2011

Color fades and reappears??!!

One of them has clearly been more shy than the other two, but the interesting thing is the following:
I made the mistake for two consecutive evenings to let the lights go off before feeding, so I had to switch on again, clearly disturbing them, in order to feed. The two of them took only a minute or so to realize that finally food had arrived, but there was no way to have the Shy come out of its hiding place among the roots. When eventually he did, I realized he had almost completely lost its dark bands, compared to the bright and neat black&white of the others. I have read that, if stressed, these fishes tend to darken, but I thought it would happen with time... And the most amazing thing was, that in a matter of minutes, finished the dinner, he was back to full colors!! At first I thought it was a light problem, but the thing repeated the day after.

My impression is that the discoloring is connected actually with the lights being off.


Only the outline of the dark bands is still visible, whereas inside the colour is gone.


The Shy in low-colours, in background, compared to a "normal" companion. 


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