Crabs

 

Freshwater Crabs

Overview:

Freshwater crabs are fascinating invertebrates known for their unique behavior, bright colors, and semi-terrestrial lifestyle. Popular species include Vampire Crabs, Thai Micro Crabs, and Red Claw Crabs, each with different care needs.

Size:

0.5–4 inches (species dependent)

Tank Size:

5–20+ gallons depending on species

Temperament:

Semi-aggressive, territorial (especially with each other)

Diet:

Omnivore – algae, pellets, wafers, vegetables, frozen & live foods

Water Parameters:

  • Temperature: 72–82°F
  • pH: 6.5–8.0
  • Varies by species (some require brackish water)

 

Care Notes:

  • Many species require land access (paludarium setup)
  • Excellent escape artists—tight lid is required
  • Provide rocks, driftwood, and hiding spots
  • May prey on small fish or shrimp
  • Molt regularly—need calcium and hiding space

 

Popular Types:

  • Vampire Crabs (Geosesarma sp.) – colorful, mostly land-dwelling
  • Thai Micro Crabs (Limnopilos naiyanetri) – tiny, fully aquatic and peaceful
  • Red Claw Crabs (Perisesarma bidens) – semi-aquatic, prefer brackish setups

 

 

 

Notes:

Assortment includes a mix of colors and patterns; Exact colors and markings will vary; Stock photo used; fish received may differ.