Giant Metrewave Radio Telescope ( GMRT ) H i  observations , done as part of an ongoing study of dwarf galaxies in the Lynx-Cancer void , resulted in the discovery of a triplet of extremely gas rich galaxies located near the centre of the void.The triplet members SDSS J0723+3621 , J0723+3622 and J0723+3624 have absolute magnitudes M _ { B } of –14.2 , –11.9 and –9.7 and M ( H i ) / L _ { B } of \sim 2.9 , \sim 10 and \sim 25 , respectively .
The gas mass fractions , as derived from the SDSS photometry and the GMRT data are 0.93 , 0.997 , 0.997 respectively .
The faintest member of this triplet SDSSÂ J0723+3624 is one of the most gas rich galaxies known .
We find that all three galaxies deviate significantly from the Tully-Fisher relation , but follow the baryonic Tully-Fisher relation .
All three galaxies also have a baryon fraction that is significantly smaller than the cosmic baryon fraction .
For the largest galaxy in the triplet , this is in contradiction to numerical simulations .
The discovery of this very unique dwarf triplet lends support to the idea that the void environment is conducive to the formation of galaxies with unusual properties .
These observations also provide further motivation to do deep searches of voids for a “ hidden ” very gas-rich galaxy population with { M _ { B } } \gtrsim - 11 .