Crayfish are ecologically and economically important organisms in many large waterbodies globally,
from tropical to temperate lakes (Harper et al. 2002, Jansen et al. 2009) and major rivers (Larson et al.
2010b). These habitats provide unique challenges for crayfi sh sampling relative to more tractable wadeable
streams and rivers, where a diversity of sampling methods of diff erent merits are available (Rabeni