Clown Loach Problem, Help!

[gtigaz]

hello im sort of new to fish keeping ive had my tank set up for about 6months , i have 5 clown loach in the tank 4 are thriving very chunky etc but 1 hasn't been out its just been in the boat ship wreck with air rock built into it, today i got it out and have put it in an isolation tank in the main tank but it didn't even try to swim away when i went to net it, just as though it just couldn't be bothered, didn't flap about or anything, then when i had it in the isolation tank i put some food in to try and get it to eat but it just isn't interested, when i took the food out it didn't even flinch at my hand being right at the side of it, looking at it it seems healthy and chunky etc only thing i noticed is that it nose seems abit red and its gills are moving quickly but no red gills or anything, has anyone any ideas?

thanks in advance

gaz

 

[Elrohirthehasty]

I've never kept them, but some friends of my have.  I seem to remember them spending a lot of time (most of their time) hidden in the log/caves.  That doesn't really help, but for future info...

 

[Blondielovesfish]

What are the tank conditions? What is the ammonia and nitrite readings in the main tank and the isolation tank?

 

[betta fish]

Also the size of the tank in litres, clown loach do hide in caves but your description does sound like the fish in question is ill. 

 

[Sophie]

My Clown Loaches come to the front for food but will dart on sudden movement. They're very hyperactive so it definitely sounds poorly! Poor mite - have you witnessed any bullying behaviour from the others?

 

[gtigaz]

the tank water is a1 i even took a sample to the fish shop and they said its good quality water and everything is spot on, the main tank is 250 litres, originally when i separated the fish this afternoon i put him in a separation tank so i could keep him in the main tank as my isolation tank doesn't have a heater in it, ive since put him in the little tank at 23degrees as thought anything is worth a tryand he is doing well now in with my fighter swimming around etc Duno what is wrong if anything is

 

[gtigaz]

i came home from work today and 1 of my dragon gobys has died, gutted, so did a water test and i got ph 7.4, ammonia 0, nitrite 0,nitrate 10ppm has anyone any idea why my dragon has died as he was bouncing about happy last night?

thanks in advance

gaz