Columbian Shark

Special requirements

• Salinity Transition

  While often sold as freshwater fish, they are euryhaline and naturally live in freshwater, brackish, and saltwater at different life stages. They prefer salt in the water and thrive when transitioned to brackish or marine environments as they mature.

• Predatory Caution

  Though peaceful in temperament, they are opportunistic predators; as they reach their 10-inch adult size, they will likely consume any tank mates small enough to fit in their mouths.

• Mouthbrooding Behavior

  This species exhibits unique reproductive behavior where the female lays the eggs and the male incubates them in his mouth for protection.

• Habitat Structure

  Requires a large swimming area supplemented with plenty of rocks and plants to mimic its natural environment.