Heroina isonycterina

  • We are currently upgrading MFK. thanks! -neo
It's fairly slow. The tiny ones from Dan have only put on maybe an inch and they've been here for a couple months now. But I think their adult size is only 5 - 6" tops, so maybe that's why?
 
Thanks for sharing the videos and info on this species. Very cool looking fish, good luck in getting a pair and spawn.
 
I came home to find one of my large Heroina in my 150 with a gaping hole in its side. I can't tell if it was brutally attacked or if it was stuck somewhere in the aquarium. It looked like heater burn (the scales had all turned white) but on closer inspection there was a chunk missing. The other two were fine, but one did have some scales missing above its eye and a few tears in its tail. I know they are aggressive with each other, but I haven't seen them do severe damage.

The only tankmates large enough (IMO) to do that much damage is my pair of Heros severus. I also have a couple pairs of Krobia and four Acaronia nassa in the tank. The Acaronia are about the same size as the Heroina and I've never had an issue with them. The Krobia only chase and fight with each other. It's all a bit perplexing.

I removed the fish to a QT tank but it didn't make it overnight. Luckily I still have nine more so it's only a minor setback. Still, it sucks to lose a $100 fish. Why couldn't it have been one of the smaller ones? :cry:
 
That does suck. I doubt it was the A. Nassa but the Krobia can be meaner then they look at times same with Sevs. What's odd is that you saw no sign of aggression up to that point. It's always the one you can't afford to loose, I can't remember the last time I found a dead cory for no reason but a dead Heckel really gets your attention.
 
A second fish got attacked in the same way -- something attacked his side, right around the black blotch. Luckily it wasn't as severe as the first one and I was able to move him to QT and get him eating. Hopefully the gouge in his side heals and he pulls through. I think the Heroina are attacking other fish which is causing the other fish to attack back. The grow outs all fight amongst themselves constantly but they've never done major damage to each other.

Here's a video tonight of the smaller seven grow outs. They were really turning on the blue colors. It's easier to see in the second video without the tank lights on, but first here's one with lights:

[video=youtube;2V6fJi2Qw2Y]http://www.youtube.com/watch?v=2V6fJi2Qw2Y[/video]
 
And here's a brief video with no tank lights. Notice how blue and red they are. This is just using the ambient lighting from the fish room.

[video=youtube;_dr6Q2ML3Ag]http://www.youtube.com/watch?v=_dr6Q2ML3Ag[/video]
 
The Heroina are pairing off. I've noticed a potential pair over the past couple of weeks, but I came home tonight to find them vigorously cleaning a flowerpot and a rock. I had to use my iPhone LED to film this because the room is fairly dark.

[video=youtube_share;ar7COmknyXI]http://youtu.be/ar7COmknyXI[/video]

Hopefully there are eggs soon.
 
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