Green Crispata Clam - (Scabies crispata)

A Rare & Textured Freshwater Clam with Striking Green Colouration

The Green Crispata Clam (Scabies crispata) is a rare and visually distinctive freshwater bivalve from Southeast Asia, prized among invertebrate enthusiasts for its beautifully textured, ridged shell and rich green colouration. Like all freshwater clams, it is a passive filter feeder that continuously draws water through its body, removing suspended algae, bacteria, and fine organic particles — making it both a fascinating display animal and a natural water clarifier.

A genuinely uncommon species that stands out from the more commonly available freshwater clams  — a collector’s invertebrate with real functional value.

Overview

How It Works

• Draws water through its body continuously, filtering out suspended algae, bacteria, and fine organic particles
• Effective at reducing green water caused by free-floating algae blooms
• Works passively — no active maintenance required beyond ensuring adequate food in the water column
• Most effective in tanks with moderate flow to deliver suspended particles to the Clam

Important Care Notes

Freshwater clam require a consistent supply of microscopic food in the water column to survive long-term. They are best suited to tanks that are not overly sterile — a tank with some organic matter, phytoplankton, or mild green water provides ideal conditions. In very clean, heavily filtered tanks, supplemental feeding with liquid invertebrate food or phytoplankton is essential.

• Bury partially in sand or fine substrate — they naturally anchor and position themselves in soft substrate
• Ensure moderate water flow to deliver suspended food particles to the clam
• Check regularly — a clam that remains open and unresponsive may have died; remove immediately to prevent ammonia spikes and water quality crashes
• Highly sensitive to copper-based medications — remove from tank before any copper treatments

Water Parameters

• Temperature: 20 – 28°C (68 – 82°F)
• pH: 6.5 – 8.0
• General Hardness (GH): 5 – 15 dGH
• Flow: Moderate — essential for filter feeding

Compatibility

• Completely peaceful with all fish, shrimp, and snails
• Avoid keeping with invertebrate-eating species such as pufferfish or large cichlids
• Never use copper-based medications while clam are present in the tank

The Green Crispata Clam is a rare, beautiful, and genuinely useful freshwater invertebrate — a quiet, hardworking filter feeder that brings both natural elegance and functional water clarity to any aquarium.