I have a roseline shark that is a little aggravating...
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I have a roseline shark that is a little aggravating...

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I have a roseline shark that is a little aggravating...
Old 08-12-2009, 07:47 AM   #1
 
I have a roseline shark that is a little aggravating...

I bought a roseline shark a few months ago. I have a 30 gallon tank with just two fish: the roseline shark and an angelfish. The two get along just fine.

The thing that bugs me is that the shark hates the light. It has half of it's color during the night, but when I flip the light on in the morning, it goes crazy, swims all around the tank and turns almost all grey. It calms down after a minute or two, but will always swim around in the shady areas of the tank. I've never seen it with full colors like I see them in videos on the internet, haha.

Any help? I really like this fish and would like to see it swimming around with all of it's colors sometime.
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Old 08-12-2009, 10:03 AM   #2
 
I've heard these fish can be sort of schooly, maybe he's lonely. I can't say much, since I've never had one. Maybe need more info on your tank. Does the shark have any caves or anything? What do you feed it? These could help other people answer your question better...
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Old 08-12-2009, 10:19 AM   #3
 
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Roseline Sharks (Puntius denisonii) require a shoal (4 to 6, the more the merrier) in order to be comfortable, thrive and show their true colors. These fish are very active schoolers and prefer a planted tank with a decent current. Provide them with what they require and their colors will pop.
Is yours a juvenile? As they mature they start to color up even more.
These fish reach 6" as adults so I doubt a school of them would be appropiate for a 30gl. I keep nine of them and they use every single inch of a 100g tank.
My shoal of barbs would *freak* for about one minute when the tank lights suddenly came on in the morning. For me the remedy was to time the moonlights to go on for two hours in the morning before the main lights come on. Is there a way for you to lighten up the room before turning the tank lights on?
I know how you feel about liking this fish...if I had to pick I'd say they are my favorite!

PS. Welcome to the forum!

Last edited by aunt kymmie; 08-12-2009 at 10:23 AM.. Reason: added info
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Old 08-12-2009, 12:07 PM   #4
 
I'd like to have more of them because they are a schooling fish, but my tank is pretty small for them, like kymmie said. I used to have a rock shelter and a rock cave, but it never used them. I didn't think it got in anything like the usual sharks do. I used to have an albino rainbow shark and he OWNED that cave. It was fun to watch him circle that thing every 5 minutes to guard it, haha.

Kymmie, I've noticed that the roseline is pretty active, haha. It's all over the place. I have an aquaclear powerhead 50 and it loves to fly through the current. As for the set up, I have a piece of driftwood and 3 plants. I want to have a little free space for the angelfish to get around. He's huge.

I'm not sure how old this one is. I bought it when it was 3 inches or so and now it's about 4 inches.

My room is pretty lit up before i turn the hood on. But I don't know.

BTW, thanks for the welcome. =)
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Old 08-12-2009, 12:36 PM   #5
 
Seems like an upgrade is in order...
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Old 08-12-2009, 01:34 PM   #6
 
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Kymmie's advice is quite correct. A fish that in nature lives in a shoal (group) of its own species will feel very isolated and constantly threatened on its own. It doesn't know your tank is safe, it only knows what nature has programmed into it over thousands of years, that it should be in a group to be safe. If you don't resolve this problem, it will be stressed out continually, and that leads to health problems, easy susceptibility to disease, and possibly death.

But the tank size is a concern, so, decide what you want and build around that; if it may be possible to get a larger tank, adding a couple more roseline would be OK--but bear in mind this is only a short-term solution and will cause more trouble if left long-term. Or return this fish for a smaller species of loach (they are shoaling fish and must be in a group too). Most stores will give credit when they learn your predicament.

Maintaining fish that grow large in a small environment does not work just because they are small now. As fish grow they develop internally and externally, and while the environment may limit their external growth it cannot stop their internal development, hence the health problems because of poorly-developed internal organs and immune systems. Fish forced to develop in unsuitable surroundings do not end up healthy, so it is good to know ahead and plan accordingly.

Byron.
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Old 08-12-2009, 05:07 PM   #7
 
Well I can't upgrade the tank size. I don't have any room for anything bigger than a 30.

I bought the roseline at petsmart months ago. The locally owned pet store has cheated me several times and I won't go back there, haha. There is one store I could try that trades fish all the time, I could give them a call. The owner is a pretty good guy.

The fish is cool, but it's always bugged me that it doesn't show its full colors and acts weird. I'd rather know it's flying around the tank with a school than by itself. Maybe somebody else can get it and give it a better tank? I hope so anyway.

I'll give the store a call sometime and see what they can do.

What other type of fish could I get then? All I have left now is a 6-7" tall bright yellow angelfish.
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Old 08-12-2009, 07:18 PM   #8
 
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Quote:
Originally Posted by Michael967 View Post
Well I can't upgrade the tank size. I don't have any room for anything bigger than a 30.

I bought the roseline at petsmart months ago. The locally owned pet store has cheated me several times and I won't go back there, haha. There is one store I could try that trades fish all the time, I could give them a call. The owner is a pretty good guy.

The fish is cool, but it's always bugged me that it doesn't show its full colors and acts weird. I'd rather know it's flying around the tank with a school than by itself. Maybe somebody else can get it and give it a better tank? I hope so anyway.

I'll give the store a call sometime and see what they can do.

What other type of fish could I get then? All I have left now is a 6-7" tall bright yellow angelfish.
If you want to build a tank around the angelfish, consider bottom fish like corydoras, small plecos (watch out, there are some small species 4 inches max, but many grow over 18 inches), medium-sized tetras (small ones like neons become food for angels, especially one as large as yours) of the Hyphessobrycon genus (rosy tetra, bentosi tetra, bleeding heart, black phantom...) or diamond tetras. All these are shoaling fish so a group of 5-7 of one of them plus a group of corys (5) would work.
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Old 08-12-2009, 07:42 PM   #9
 
I know all about those plecos, haha. Those things can get huge. I like the oto catfish, but I'm sure the angelfish would bully them around. I'd like to have a couple of fish to work on any algae. I understand about the small tetras, too. I bought 12 ghost shrimp once and 3/4's of them were gone by the time I woke up. I learned quick what he could eat.

I've never looked into corys. I might check them out. I'm not really into the bigger tetras though. I actually used to have 11 harlequin rasboras. I became tired of them and sold them. They looked good though. It was always fun to feed them. That was months ago and the angelfish would bully them around sometimes.

Are there any bigger fish that would be compatible with him? I know the silver dollars could work.

BTW, thanks for helping me.
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Old 08-13-2009, 11:08 AM   #10
 
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I doubt the angel would bother with the ottos; ottocinclus spend their time (all of it) grazing every surface for algae. Its the small tetras swimming around the angel that gets his instincts to eat them going, or the shrimp crawling about. But I am surmising; never kept angels with other fish (spawned a pair many years ago, none since).

If its algae eating fish you want, two other options are Farlowella acus and Rhineloricaria (whiptails). These do quite a job on algae; my three Farlowella in the 90g are constantly grazing plant leaves, and here again i suspect the angel would not bother them.

Instead of tetras then, maybe another angel for company? They too are shoaling fish by nature, so perhaps the best company would be a friend. I'll leave it for the angel experts on here to comment on this suggestion, they know more about angels than I do.

Byron.
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