Cambarellus patzcuarensis is a small, threatened species of crayfish in the family Cambaridae.[1][2] It is endemic to Michoacán in Mexico and often kept in aquariums

It measures 4–5 centimetres (1.6–2.0 in) in total length, including claws. Most specimens found in the wild are brown, sometimes with a gray or blue tint. Cambarellus patzcuarensis var. “Orange” (Mexican dwarf crayfish, sometimes Mexican dwarf orange crayfish) is an orange-coloured mutation often held in aquariums, but this form is rarely found in the wild

• pH level range: 6.0 to 8.0.
• Temperature range: 22° to 25° .
• Water type: kH 1-15; gH 3-25; TDS 100-500.