Orange Spot Filefish - Oxymonacanthus longirostris - Laying on side

Xaivia

New member
I bought a pair of orange spot filefish and put them in my tank on Tuesday. I generally like to keep the lights off for a full 24 hours so the fish can get used to their surroundings. I turned on my lights today and the female would sometimes sink to the bottom of the tank and lay on her side on the sand. She can swim up and around when she thinks I am getting too close, but likes to lay on the sand when not threatened. Is this normal behavior for a filefish? She is still breathing normally. The male is not doing exhibiting this behavior. I have turned the lights back off in case this is causing her unnecessary stress. I tried to feed them today, but they did not eat which is expected as they are in a new home. I really appreciate in advance any advice in this matter. I am quite worried about her. (I have attached a photo in case this helps.)

Also, as an FYI:
75 gallon tank, 30 gallon sump
1 starry blenny
1 hoeven's wrasse female
2 orange spot filefish male ~ 2 1/2" and female ~2"

2-3" deep sandbed
~100 lbs of live rock
This tank established for 1 year
Nitrates 15
All other parameters within the acceptable numbers
Most recent water change - 15 gallons on Sunday
 

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OSFF are most of the time difficult to get them eating anything but acropora, didn't know if you knew this or not. Your fish looks very malnourished so it might not make it. Mine never laid on its side when I got him so I'm not sure if anyones else's did. You should try smearing some gel food on an acro skeleton to try and get a feeding response or buy an actual live acro for them to graze on to help them get their weight up. Hopefully she pulls through, I know a lot of people didn't think my little guy would make it.
 
Where did you get the fish from?

Do you have access to any cheap acropora corals?

Can you get nutramar ova or Rogger's foods?

I have had success with those with mine but they arrived weaned to frozen. Unfortunately that female does look thin, but so did mine when she arrived.

Can you get us more pictures?

Good luck,
 
Try offering Nutramar Ova, Cyclopeeze, live blackworms and Ocean Nutrition frozen formula 1 and 2. These are foods that mine eat with gusto. I would have started them off in a smaller QT tank so there were no food competitors and you could feed them heavily. Try feeding them several times a day - at least twice, more is better until they fatten up.
 
Unless you bought a pair of WEANED fish, and judging from the weight of the fish in question, you did not, there will be no eating because the fish won't recognize anything you offer them as food.

You need to get some live Acropora into the tank yesterday and hope they begin eating, or they won't last long enuff to begin the weaning process. The fish will likely not feed while you're watching, so you'll need to hide somehow and peek at them. OSFF should be fed several times a day.

HTH
 
I wanted to thank you for the suggestions. I was told they were eating frozen foods before I bought them. So, I tried a variety of foods multiple times a day. I finally got them to eat, so things are looking up. They like the frozen Spirulina Brine the best, but I've been doing a combination of pe mysis, spirulina brine, and 2 types of gel foods. I haven't seen the female laying on the sand since I posted. Maybe she was still in a little shock from being in a new place. I know I'm definitely not out of the woods, but I feel a lot better now. While they are still thin, they are looking much better and aren't as thin. I plan on doing a water change very soon from all the food, but my nitrates aren't bad right now. Anyway, again thank you for the help.
 
PE mysis are a bit large for OSFF, altho good eaters will peck them apart. Ours do better with Hikari mysis. Many specimens really like NLS pellets and Nutramar Ova. Our pair loves shaved salmon flesh too (freeze a small chunk and grate it with a "micro grater").
 
Orange Spot Filefish Success!

Orange Spot Filefish Success!

I've been lucky enough to have had an orange spot filefish for almost a year now and he's eating everything, but it took a LOT of work to get to this point. I started off with 3 and 2 just flat out never ate a thing. The smallest one was the winner and I feel like that's got something to do with it. Get them as small as possible. If you notice the file is "pacing" and picking at the glass at seemingly nothing, it won't live. It's too stressed out. It's all about the individual with these fish and if you are lucky, you'll get a good one that will work with you. The difference in personality between the the one that lived and the other two was really noticeably different. It's like he had no fear, almost like a child - whereas the bigger older ones just seemed freaked and out of their element. He was picking at branching SPS right off the bat too, whereas the others didn't touch a thing. Do not think you can drop these fish into a community aquarium and think they will be fine. You must start them in a tank by themselves to get them eating.

FEEDING: Be prepared for a challenge.

These guys are used to eating SPS polyps, along with little things that live on in the SPS all day long in the wild and don't even associate floating things in the water as food they can eat. This is key to understand.

Buy a medium sized chunk of pocillipora, and an 8" branching piece of acropora. This just added $100 to your cost if you weren't calculating. The pocillipora is used for the dinner table and the acropora is for sleeping quarters. If you give a sob story at the local fish store about how you need this big piece of acro as filefish food, they will give you a deal on it - it doesn't have to be anything nice - brown is cheap. You want the branches to be far enough apart so it will have options for sleeping in it (ridiculously cute). They use their barbs to secure themselves at night when the lights go out and they are VERY particular about sleeping in the same perfect spot. They also change color at night for camo which is pretty cool.

The strategy is, put things in the tank that they initially recognize as food (live pieces of SPS) and fake them out by jamming the actual food IN the pocillipora. This type of coral is good because the branches are tight and you can jam the food into it and it will stay there all day. Also, he seemed to pick at that type more anyway just by preference. The file should start picking at the SPS right off the bat. If he doesn't, sorry, but he's not going to live.

Buy Roggers Frozen Food (it's green). I can't stress this enough. It's the only thing i've been able to get them eating after trying seriously everything under the sun and doing multiple rain dances. Cut off a 2" chuck of roggers with a knife and jam it into the pocillipora somewhere so it doesn't move. Do this at the same time every day. The SPS probably won't live through this routine of frozen food being jammed into it so do some expectation setting at the door. Also, NO hermit crabs or shrimp in the tank. They end up competing for the food and dislodging the roggers chunk from the coral and it ends up down the drain or seriously ****ing off your filefish. As it picks normally at the SPS which it recognizes, it'll come across this new thing that's strange to him initially, but once he tries it, that's where the magic happens and you've got the coolest colored buddy for life.

They are quite personable and know what time food comes. When you see the food is gone out of the coral, add another piece. One a day is good - it gives them plenty of food all day long. He does this funny little dance when he knows he's going to be fed. They are signaling fish - meaning they morph their bodies in strange little ways to communicate and they will do that with you.

Once you've got them eating roggers from the pocillipora for a few weeks, get one of those little food clips with the suction cup and start putting the roggers in that to wean off the pocillipora. Once comfortable in their new home and have a routine, they'll start trying new things. Add cyclopeeze, mysis, brine routinely to get them tempted on floating things. It took about 6 months for him to start eating mysis. Cyclopeeze took about 3 weeks. He's now happily living with an orbic batfish in a pretty low flow tank. They get along great and pal around and he'll even eat frozen food out of my hand now. Batman and Robin. So cool!

BEST OF LUCK!
 
You're not going to know what foods your partucular fish until you try them on your fish. I got mine 2-1/2 years ago, and a lot of what people said their own liked.... mine did not. I think we did a thread about it. Lemme go look.

Mine would not touch Roggers, nor did they like Nutramar. Just saying to try everything. Don't be discouraged if yours don't take some of the suggested foods, as mine never did.

Ours really really likes salmon. After they take the first bite, they go into a little feeding frenzy.
 
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