Average density (ind ha−1) and standard deviation (lower row with smaller font after “±”) of all tested species-size groups for both sampling gear types and reservoirs. NC means no catch. Asterisks below size groups indicate those in which the gear had significant influence on the measured density. Asterisks accompanied by a T mean that a higher density was found in the trawl, whereas those with a PS indicate that a higher density was found in the purse seine. NS indicates a non-significant difference between the two types of gear.