Donna McAndrews

Written by Russell McAndrews Heros carpintis is an attractive mid- to large-sized cichlid which is widely spread throughout Mexico’s

Written by Russell McAndrews Heros pasionis (Rivas 1962) is a lovely and timid cichlid of the Thorichthys subgenus, otherwise known

Written by Russell McAndrews What is pH?  Why should I be concerned with it?  Technically, pH equals the negative log