With their long delicate fins, betta fish need a tank with low water flow and lots of places to hang out and nap. A 5-gallon tank is ideal for most betta fish, and they should never share their tank ...

【Super Mini，USB Aquarium Heater】USB heater, output voltage 5V, more convenient and safe to use, plug adapter not included. 10W aquarium heater is very small and short with its length of 1.6in/4cm, so ...