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The Dwarf Pea Puffer, or Indian Dwarf Puffer, is a tiny, freshwater aquarium fish (1-1.5 inches) with striking yellow and black iridescent patterns on its body. Known for its "spunk," intelligence, and tendency to be aggressive towards tank mates and even its own kind, this species is best kept in a heavily planted, low-flow aquarium to provide hiding places. While small, they are semi-aggressive, so groups of three or less in a 10-gallon tank are ideal.

The Figure 8 Puffer is a small, entertaining fish native to Southeast Asia that has dark brown to green backs with yellow spots and lines, and a white underside. It is named for the distinctive markings, which can resemble a figure 8, especially on the tail. These curious and intelligent fish require a brackish water environment with hard-shelled food to wear down their continuously growing teeth and can be prone to fin-nipping, though generally less aggressive than other puffers.