Size - approx 1-1.5cm The North Qld Algae Shrimp is a very popular and active algae-eating species. They are ravenous eaters, consuming not only most algae, but eat dead plant castoff material (detritus) and clean the tank of leftover food. They are quite small, averaging between 1-2cm centimeters, making them ideal for a smaller tank. They only resist eating blue-green and green spot algae ( but have known to eat Black Beard Algae when no other food source is available) It's one of the best all rounder clean up crew. Please acclimate for at least 2 hours before introducing to your tank. Quick Stats for NQ Algae Shrimp Scientific Name: Caridina longirostris Care Level: Easy Size: 2 - 3 cm Tank Placement: Midground to background Lighting Requirement: Thrives in low to medium light Ideal Temperature: 20°C - 26°C pH: 6.0 - 7.5 CO2: Not required Substrate: Yes, preferably fine gravel or sand