Orange Spotted Filefish Attempt

Steve and his Animals

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I recently got an itch to attempt to keep a pair of orange-spotted filefish (Oxymonocanthus longirostris). I like a challenge, and I know their prospects are slim the vast majority of the time, but if you would humor me with my attempt I would be grateful.

I recently acquired a pair, a smaller (approx. 2 inch) female and a slightly larger (approx. 2.5-3 inch) male. They both came in very alert and a decent weight, not too skinny but not exactly plump either. The female took to a few foods right away, including smaller bits of mysis and small new life spectrum pellets, which I was happy about. Of course, this is only half the battle, the other is making sure she gets her fill frequently, which is proving more difficult as her mouth is so small (I've seen pellets literally bounce off her face as she tries to suck them in, I'm looking into the even-smaller TDO pellets and training her to eat masstick).

The problem is the male: he's acting in a way I've never seen one of these fish act before; he literally sits and hides in the same position all day. When I mean all day, I mean I come down to feed in the morning, he's wedged in one spot, I come home from work, he's still there. I come down the next morning, same spot, same position. He's definitely alive and is otherwise acting normally, but he refuses to leave his chosen crevasse. It's not like he hides when he sees me, that I would understand, but he literally doesn't even come out to swim around and look for food during the day.

I've literally grabbed him with my fingers to see what he will do when removed from a spot, he just half-runs to a new spot and wedges himself. It's kind of heartbreaking, because when the female sees him she tries to sidle up next to him, like my pair of banded pipefish do, but then she gives up after he wedges himself and goes back to looking at bits of food to eat.

Anyone have any ideas? They're in a 40g QT, multiple caves, dim lighting, quiet and dark part of the house (unfinished side of the basement), no aggressive tankmates (not that I think he can even see any from where he hides). It's only been 5 or 6 days since I got them, but I know their fast metabolism is putting me on a clock if I don't get them both successfully eating.
 

Rtaylor

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@Rtaylor If you have any insight I would appreciate it greatly.
Hi, that isn’t a common behavior for these fish. Definitely put Masstick on the glass near him. Mine like pellets, they do have to be tiny. How much flow is there? Mine seem to like a good amount of flow.
Feed them at least 5-6 times a day. Will the male eat Masstick?

You can also try frozen fish eggs, rotifers, and cyclops if you can find it. Those are small enough that they easily fit in their mouths. Feed very liberally, they will peck at stuff on the bottom of the tank.
 
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Steve and his Animals

Steve and his Animals

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Hi, that isn’t a common behavior for these fish. Definitely put Masstick on the glass near him. Mine like pellets, they do have to be tiny. How much flow is there? Mine seem to like a good amount of flow.
Feed them at least 5-6 times a day. Will the male eat Masstick?

You can also try frozen fish eggs, rotifers, and cyclops if you can find it. Those are small enough that they easily fit in their mouths. Feed very liberally, they will peck at stuff on the bottom of the tank.
I haven't seen the male leave his spots long enough to look for any food, let alone masstick. I can try to put some near his crevasse, but I don't know if he'll react to it. The flow in the tank is ubiquitous but not strong, food tends to pile in the center of the tank as a result.

I've tried San Francisco reef plankton and PE Calanus as well. The female seems to like mysis the most, although it's sometimes hard to see if she is going for the smaller foods.
 
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Steve and his Animals

Steve and his Animals

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Quick Update:

The male unfortunately never really got enough courage to look for food and passed a day or two ago. Unfortunate, but honestly somewhat expected from his behavior.

The little female on the other hand is real champ. Just gave the QT tank their second feeding of the day and her belly looks nice and plump. Not quite stuffed but close to it. She's still overall somewhat skinny, but I'm hoping this is a step in the right direction.

I'll look into replacing the male, since she really seemed to gravitate towards him even though he ignored her.
 
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Steve and his Animals

Steve and his Animals

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Hi @Steve and his Animals ,
Any updates on your filefish?
The female hung on for quite a while, but never really put on weight. Couldn't really get her to eat pellets or masstick reliably enough for an autofeeder to keep her full. I may try again, but I don't like my odds as everyone who tries these fish usually finds out.
 

Rtaylor

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The female hung on for quite a while, but never really put on weight. Couldn't really get her to eat pellets or masstick reliably enough for an autofeeder to keep her full. I may try again, but I don't like my odds as everyone who tries these fish usually finds out.
I’ve had 2 males for over 2.5 years. And 2 females almost 2 years
384B0546-5EB2-4F68-BC7E-7F249E70005C.jpeg
 

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