TThe cichlids yearbookThe cichlids yearbookde Ad KoningsMateriasCichlidsIdentificationBehaviorEdiciones (1)The cichlids yearbook (1991)Cichlid Press · inglés · ISBN 9783928457002Más obras de Ad KoningsGeheimnisse des TanganjikaseesDas Back-to-nature-Handbuch für MalawibuntbarscheMalawi Cichlids in their Natural Habitat, New 5th Revised & Expanded Edition 2016