How many cold water fish can you keep in a 15 gallon tank?

The number of cold water fish you can keep in a 15-gallon tank depends on several factors, including the specific species of fish, their size, and their compatibility. As a general guideline, you can keep around 1 inch of fish per gallon of water. However, some fish may require more space, while others can be kept in smaller groups.

Here are a few examples of cold water fish that you could keep in a 15-gallon tank:

* Neon tetras: These small, colorful fish are peaceful and easy to care for. You can keep a group of 10-15 neon tetras in a 15-gallon tank.

* Cardinal tetras: These fish are similar to neon tetras but have a brighter red color. You can keep a group of 10-15 cardinal tetras in a 15-gallon tank.

* Rummy nose tetras: These fish have a distinctive red nose and are also peaceful and easy to care for. You can keep a group of 10-15 rummy nose tetras in a 15-gallon tank.

* Zebra danios: These small, active fish are very hardy and can tolerate a wide range of water conditions. You can keep a group of 10-15 zebra danios in a 15-gallon tank.

* White cloud mountain minnows: These small, peaceful fish are also very hardy and can tolerate a wide range of water conditions. You can keep a group of 10-15 white cloud mountain minnows in a 15-gallon tank.

It's important to note that these are just a few examples, and there are many other species of cold water fish that you could also keep in a 15-gallon tank. When selecting fish for your tank, be sure to research their specific care requirements to ensure that you can provide them with a suitable environment.