
Blackside darter trouble
#1
Posted 30 March 2025 - 02:11 PM
#2
Posted 31 March 2025 - 12:07 PM
Your pictures are not attached, but by what you described, it was trying to mate! The males 'vibrate' on the females to get them to release eggs. Your original one is certainly a male, and likely the newcomer is female. Male daters will spar with one another, but otherwise darters are very social and get along even during the mating season (which is now).
I had a small school of Blackside a while back but never saw any spawning. I did witness some Bluebreast darters doing exactly what yours were, and I saw eggs when they were done. My tank was a community 150g and was in a room with strong ambient light from outside. My guess is the longer days triggered them.
I would grab a few more and enjoy them interacting.
#3
Posted Yesterday, 11:51 AM
One seems to be aggressive now. Is it possible when I introduced the second one originally, that the first darter mistook it for a female? I would have thought they would have known right away.
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