He kept many pets at home and Surgeon-General Bannerman noted in his preface to Eha's books that he often found himself having to go on unpleasant trips to the "primeval forests of Cumballa Hill" to look for mosquito larvae to feed the fish. In appearance Eha has been described as a "long, thin, erect, bearded man...with a typically Scots face lit up with the humorous twinkle one came to know so well." A photograph taken in 1902 shows a fringe of hair encircling a bald head which is commented upon by Bannerman as "a condition which "Kemp's Equatorial Hair Douche" had not been able to prevent".