
The eggs are small, ranging from 0.5 to 0.8 mm. For comparison, tobiko is larger than masago (capelin roe), but smaller than ikura (salmon roe). Natural tobiko has a red-orange color, a mild smoky or salty taste, and a crunchy texture. Sometimes tobiko is colored to change its appearance, other natural ingredients are used to accomplish the change...
Found on
http://en.wikipedia.org/wiki/Tobiko

(Japanese) orange-reddish roe of the flying fish
Found on
http://www.alternative-hawaii.com/gloss.htm

Flying fish roe. This red, crunchy fish is often served as part of Maki Sushi and Nigiri Sushi.
Found on
http://www.encyclo.co.uk/local/21701
No exact match found.