सर्वात विषारी मासा कोणता? A. पफरफिश B. पोर्क्युपिनफिश C. पिरान्हा D. अँगलर फिश

The pufferfish contains tetrodotoxin, a nerve poison far deadlier than cyanide; it is considered the most poisonous fish (eaten as fugu in Japan).