Here are a couple lines from various Denison Barb articles, if you want the entire articles, google Denison barb temps
The ideal temperature range is 59°F to 77°F (15°-20° C). If housing Denison barbwith tank mates that need water on the warmer side an aquarium heater is recommended to keep the tank towards the high end of their temperature range
Water Conditions
Temperature: Prefers slightly cool conditions. A temperature range of 59 – 77°F/15 – 25°C has been recorded in its natural waters.
The ideal temperature range is 59°F to 77°F (15°-20° C). If housing Denison barbwith tank mates that need water on the warmer side an aquarium heater is recommended to keep the tank towards the high end of their temperature range
| Family | Cyprinidae |
| Origin | Southern India |
| Social | Peaceful with similarly sized fish |
| Tank Level | Mid Level |
| Minimum Tank Size | 55 gallon |
| Diet | Omnivore, eats most foods |
| Breeding | Egg layer |
| Care | Easy |
| pH | 6.8 to 7.8 |
| Hardness | 5 to 25 dGH |
| Temperature | 60 to 77 degrees F (15 to 25 degrees C) |
Water Conditions
Temperature: Prefers slightly cool conditions. A temperature range of 59 – 77°F/15 – 25°C has been recorded in its natural waters.