"Sawfish seen in action" might sound more grammatically correct than "Sawfish saw in action", but if you click on the link below you'll see why I've given the blog post that name. Thank you as always to everyone who contributed images and comments during the week.
This movie clip shows a sawfish feeding.
Sawfishes can slash from side to side with the rostrum to stun, impale or even cut prey fishes in half. The rostrum can also pin fishes to the substrate where they are ingested.
Fishes of the genus Liopropoma have have extremely long ornate second and third dorsal fin spines during their pelagic larval phase. This ornamentation is lost when the larvae metamophose during the transition between open water habitat and the reefs where Liopropoma species live as adults.