what si a tnak made for them?
current?
mm.. maybe I will get harle rabs instead.. have anything to say (adivce) about them?
P.S. like wolf's rain huh?
I mean a tank made for them as in a tank where a lot of care has been taken to making it ideal for them- some fish like platys (just an example) can thrive in pretty much any set up as long as the tank is of at least 10gals, has some hiding places, the temp is 24-28°C and care is taken in getting the right gender stocking.
Other fish are much more fussy about what sort of habitat/environment they have, like hillstream loaches which are sub-tropical fish (temps between 19 and 23 degree's), and need a high oxygen content in the water which powerful filtration to give a more river type environment. They do best on a fresh algae source (not all hillstream loaches take well to algae wafers or thrive off them well), usually need at least 20-30gals due to habitat requirement, do best in tanks with a mix of pebble, sand and gravel substrate, need a lot of care taken in their stocking, must be wary on the exact species of hillstream loach as there are so many types which look similar to one another etc etc...
I've done some research on Puntius (formerly Barbus) denisonii i.e. Denison barb, Red-lined torpedo barb, Denison's flying fox, Rose line shark, Miss Kerala, Red line torpedo barb, Chorai Kanni, Denisoni barb, Bleeding eye barb, Indian flasher barb etc...
It appears they are actually much more sub-tropical fish (preferring temps between 15-25°C/60-77°F) which means if the temp gets too high, the fish will not be able to get enough oxygen from the water and will slowly suffocate, while if the temp is too low, its metabolism will be greatly affected and will also not live long. Its generally very adaptable to ph as long as it is acclimatised properly, although ph from 6.8-7.8 is best.
It has been found in very soft water in slower moving muddy shallows, but it is primarily found in and thrives best in cool mountain streams.
From PFK website;
"A high oxygen level is a prerequisite, particularly if the water temperature is on the high side. It's fairly peaceful and non-territorial and can be mixed with most tropical community fish. However, there are reports of some specimens being a little waspish (these may be Puntius chalukudiensis). Keep in a group. Use a tight fitting lid as this fish can be a little jumpy at times."
"Two different fish are being sold as P. denisonii in the UK aquatic trade. These differ slightly in both colour and temperament. Some subspecies of this fish (such as P. denisonii ubangii) have been previously recognised by Indian taxonomists, however, these are not currently regarded as valid.
According to collectors at Petfrd.com, one of the fish being sold as P. denisonii is larger, reaching just over 15cm/6" in length and is slightly more aggressive. This is believed to be from the Chalakuddy River in Kerala, India, where it lives among rapid water at the base of a waterfall. This larger fish was described in 1999 by Menon, Rema Devi and Thobias of the Zoological Survey of India at Puntius chalakkudiensis. Little has been written about this fish, and there's some debate as to whether it's still valid. However, a survey of Kerala undertaken by the FAO classed the species as endangered in the Chalakuddy River system. This fish is said inhabit the upper reaches of rivers and lives among dense plant growth. The species name has sometimes been incorrectly spelt as chalakudaiensis and chalakudiensis.
Another population from Kannaur, Kerala, is smaller, slimmer and "more Rasbora-like". The bulk of the fish in the trade are now said to be this smaller species, which is the true denisonii."
These are endangered fish in the wild, however, they have become increasingly popular in the fish keeping hobby as they are now farmed commercially (which i assume is where most roseline sharks come from in lfs's).
Having researched on hillstream loaches a lot in the past (as i hope to get them in the future), my advice would be to set these fish up their own sub tropical tank (temps between 18 and 23 degrees should be good) as if they are anything like hillstream loaches, they will not last long over time living in warmer tropical temperatures.
Other than the whole tank habitat/set up thing, these fish appear otherwise pretty straight forward and easy to care for (they accept a variety of foods and are hardy and colorful if fed a good and varied diet, they have also been known to spawn in aquariums as well), but these are rather expensive fish and not very common so i would definately advise taking some time and money to setting up these fish a better tank set up, as it would be a real shame to lose such lovely fish through lack of planning.
Edit: oh, and before i forget, with the whole tiger barb thing, tiger barbs would be fine for any tank 30gals or above and are generally not very fussy fish to look after for, but they are not good fish for your current stocking particually due to the gourami. Groups of 10 or more tiger barbs tend to work best, although the minimum advised number is 6.
They are omnivorous fish and in the wild mostly live on crustaceans, insects and plant material, although will take pretty much all foods in the aquarium from bloodworms to flake foods- a varied diet is best
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If you want to keep your current stocking and tank as it is, and still want either roseline sharks or tiger barbs, you will need to set these fish up their own tanks with habitat or stocking mroe suited to them
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