Q1. What is the largest fish in the world?
The whaleshark [grows to over 12.5 m (41 feet) in length and weigh up to 21.5 tonnes].
Q2. What is the smallest fish in the world?
The male of Photocorynus spiniceps measures 6.2 mm.
Q3. What is the lightest fish in the world?
The stout infantfish (Schindleria brevipinguis) weighs 15 mg.
Q4. What is the heaviest bony fish in the world?
The ocean sunfish/mola mola [4.3 m (14 ft) from fin-to-fin, 3.1 m (10 ft) in length and weighed about 2,300 kg (5,100 lb)].
Q5. What is the longest bony fish in the world?
The oarfish [published total length of 11 m (36 ft)—with unconfirmed reports of 17 m (56 ft)].
Q6. What is the deepest fish in the world?
The snailfish, caught in the Mariana Trench. … lives 8 km (5 miles) underwater.
Q7. What is the hottest fish in the world?
The desert pupfish is found in water temperatures of 46 °C (114 °F).
Q8. What is the coldest fish in the world?
The icefish. They produce a natural antifreeze in their blood and have no red blood cells, enabling them to withstand temperatures of 0 °C (32 °F).
Q9. How long is the longest goldfish in the world?
47.4 cm (18.7 in) from snout to tail-fin end, world record made in 2003.
Q10. How old was the oldest goldfish in the world?