Riakasia
Ny riakasia dia velaran-drano tsy lalina, saika mifandray amin' ny ranomasina raha tsy nisy andilan-tany na fasika manelanelana azy roa.

Famaritana 
Ny riakasia dia "dobo na farihy kely mifandray amin' ny ranomasina".

Jereo koa 
Ranomasira
 Ranomasina
 Hoala
 Helodrano
 Andilan-dranomasina
Ranovory
 Farihy
 Dobo
 Heniheny
 Honahona
 Riakasia
Ranomandeha
 Renirano
 Ony
 Sakelidrano
 Loharano
Hafa
 Morontsiraka

 Voambolan' ny jeôgrafia

Loharano sy famaritana