Random death of healthy mandarin

Viracon13

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I found one of my mandarins dead this morning. Great Christmas present. I've had this male mandarin for about 2.5 years and he was very beefy. He'd been eating frozen food as well for the last 1.5 yrs or so. By the time I took him out of the tank, my shrimp and crabs had eaten a bit of him already so it's tough to tell if he had any markings. He'd been active and eating every day so lack of food was not an issue.

My female mandarin doesn't show any sign of disease and is very active as well. She's definitely gained some weight since I got her so I'm not concerned about the pod population of my system. I 've never seen any of my other fish harass my mandarins so I was very surprised by the male's death. I think most people that lose mandarins have only had them for a few months or were in a system that was too small but that's not the case here. Has anyone else experienced a random death of a healthy mandarin? Ideas of what may have caused it?
 
Do you know if you have ich or some other disease in your tank? Mandarins typically aren't much affected by ich, but they are not completely immune.
 
Do you know if you have ich or some other disease in your tank? Mandarins typically aren't much affected by ich, but they are not completely immune.

No signs of ich or any other disease from what I can tell. The 10 other fish in the tank all look good and are eating well.

I haven't introduced a new fish in several months.
 
How big was the mandarin when you bought him? Was he already full grown? Was he wild-caught?
 
He was about 1.5" when I got him and I don't think he was fully grown yet. He was getting there but still had some room for growth. No idea if he was wild caught
 
Their lifespan in the wild is supposed to be 10-15 years but I don't know how they could know that. I would assume it is closer to 8 years just by their size but that is also a wild guess. We don't know how old yours was but if he was 4 years old when you got him, I would imagine he could have died of old age. (but I doubt it)
If they are well fed they are very hardy having no scales, just a thick, smelly slime coating that protects them not only from being eaten, but also from most pathogens.
I think I had this guy for 8 or 9 years. Did you have a female with him and if so, were they spawning? Healthy mandarins spawn constantly.

 
I added a female mandarin about 9 months ago but I haven't seen them spawn. They did their dance every now and again but never really swam together.

All other fish are still looking great. I'll keep my eye out for a male mandarin that looks healthy enough and will add him next year
 
Spawning dance is a healthy sigh
 

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