Diagram of the selection process for the 196 Hydra cluster members from the final sample. Center-up: The selection of the 196 galaxies for this study was based on both optical and infrared data availability. Redshifts come, in order of preference: from radio HI estimations for the 89 galaxies with an HI detection, from 6dFGS for another 90 galaxies without an HI detection, and finally from NED for 17 galaxies without HI and spectroscopic detections. Center-down: Star formation rates (SFR) were calculated from 186 Hα and 150 mIR confident detections. (*) 10 estimations of the SFR_Hα are lower limits due to high background signal from nearby galaxies, lower S/N, uncertain continuum subtraction, or the presence of very bright nearby sources. We include 46 estimations of SFR_IR based on upper limits measurements due to low S/N.