Non-coding RNAs

Small non-coding RNAs in C. briggsae and other Caenorhabditis nematodes
siRNA (small interfering RNA) – 22nt and 26nt (mostly)
piRNA (piwi-interacting RNA) – 21nt long
miRNA (micro RNA) – ~22nt long

miRNA families
Source: Shi et al., Genome Research 2013
Table (PDF version)
84 C. briggsae
106 C. elegans
85 C. remanei
87 C. brenneri

Source: miRBase
C. briggsae micro RNA
C. elegans micro RNA
C. remanei micro RNA