Purple firefish - Aggressive? How do I know if i have a mated pair?

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I've just picked up two Nemateleotris decora.

So stoked as I love these little guys! I've heard they can be aggressive unless you have a mated pair, well I saw these two juveniles together in a tank and I thought i'd try my luck.

They're still busy acclimating so no pics yet but here's a shot of the species for any who don't know what i'm talking about!

 

moz

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As far as I know there is no reliable method for sexing Nemateleotris decora, I have two (also hoping for a pair). The first few days they spent together near a cave, now one has a territory (about half the tank) that it defends, and the other (more timid) fish stays in the other half of my 4foot. The two fish still sleep in the same cave though.
 
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I saw a group of maybe 5 of them in a dive in Zanzibar recently. They were all hovering over little caves in the sand in a patch a little over half a square meter.

Seemed to me they were haremic/colonial.
 
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Ok one went MIA last night after putting him in. Other slept by himself on the other side of the tank.

However this morning I see the two of them swimming together so i'm hoping I have a mated pair?
 

Mike

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Cool, keep an eye on them, maybe early to say "mated pair" but lets see how they go.
 

jacquesb

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Hi Matt - congratulations on your new acquisition! AWESOME little fish! I have a fire goby (the "normal" / Orange/red one). I too added another fire goby later on, BUT, they did indeed fight. The established fire goby chased the other one around the tank (my 2 metre even) until the other fish (poor fish) died of exhaustion.
I think that the BEST chance of this NOT happening, is to add the fish to the tank all at the same time.... As you have done!

Keep us updated on the progress! And post some pics of them IN your tank? Please.
 
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Will do, i'll let them get settled and then post up some pics :thumbup:
 
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crispin: Just opened up the extra little bit of space for some more livestock ;)

Just not liking the POOR lighting that comes with it. But never fear, i'm going to be doing a DIY upgrade in a bit! ;)
 
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They've both been in the tank a day now and are much happier! Both eating so thats a great sign. Getting chased by the clowns here and there but nothing serious. Both seem to be getting along and hanging out together so hopefully there won't be any problems.

Please excuse the out of focus cell phone pics, folks on holiday with my camera.

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Check the damn diatoms! Been here for the last 2 weeks (since I moved over to the new tank) used brand new substrate. When will the algae go?

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Please excuse the out of focus cell phone pics, folks on holiday with my camera.

Brilliant....party matts house:) folks away lets move in some more tanks
 

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