Valentini pufferfish (Canthigaster valentini) care guide

Group
Marine fish
Other names
Saddled puffer, Black-saddled toby, Valentin's sharpnose puffer
Family
Tetraodontidae (pufferfishes)
Origin
Tropical and subtropical Indian Ocean (incl. Red Sea) and Pacific oceanic islands; rocky and coral reefs, lagoons and outer reefs to 55 m.
Water
saltwater
Maximum size
11 cm
Temperature
24–27°C
pH
8.1–8.4
Hardness
Salinity SG 1.023–1.026
Minimum tank
120 litres
Care level
intermediate
Temperament
semi_aggressive
Reef safe
with_caution

Care

A small, popular puffer for a tank of about 120 litres or more (an estimate from its size) with live rock. Water figures given here are general marine aquarium guidance, not species-specific: 24–27 °C, pH 8.1–8.4 and a specific gravity of 1.023–1.026. Keep nitrate low and water quality stable. It is active by day. In the wild mature males hold territories with a harem of one or more females, while bachelor males wander. It is pale with dark saddles over the back, brownish spots and bright green eyes. The mimic filefish Paraluteres prionurus copies its pattern to borrow its protection, so check identification when buying. Toxins: like other pufferfish it carries tetrodotoxin in its skin and organs. Handle it carefully (with a container rather than a net) and never eat it, and a dead or dying puffer should be removed from the tank promptly. The source describes it as highly poisonous to eat, and its toxin is lethal to many fish. Sources: Wikipedia, List of marine aquarium fish species (en.wikipedia.org/wiki/Listofmarineaquariumfishspecies); Wikipedia (en.wikipedia.org/wiki/Canthigastervalentini). Checked October 2026.

Diet

Omnivorous: mainly filamentous green and red algae and sea squirts, plus smaller amounts of coral, bryozoans, bristleworms, echinoderms, molluscs and other algae. In captivity offer mysis, krill, chopped shellfish and some algae-based food, with occasional snails for the beak.

Breeding

The sexes occur in roughly equal numbers. Females lay batches of 15 to over 800 eggs on the bottom every 4–10 days, mostly by day; there is no parental care. Eggs hatch in 3–5 days and the larvae spend 64–113 days in the plankton, which makes captive rearing very difficult.

Compatibility and tank mates

Reef safe with caution: it may nip corals and will eat small crustaceans and snails. One per tank, or a male with females in a larger system. Avoid long-finned, slow fish that it may nip.

Last updated 8 October 2026. Community-edited care guide on Aquatic-Auctions.

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