Improperly prepared puffer fish can be deadly due to toxins within the fish.
Improperly handled and undercooked fish could be deadly due to microbiological growth.
Some people are deathly allergic to seafood.
But not all fish are deadly to all people.
Penguins are not considered deadly animals. They are cute and charismatic birds that mainly eat fish and other small marine creatures. While they may bite or peck if they feel threatened, they are not known to be aggressive towards humans.
i think that the puffer fish is very deadly but not towards humans.
as deadly as a snake's hiss
The exact number of deaths caused by puffer fish ingestion is difficult to determine, but there have been reported fatalities from consuming improperly prepared puffer fish, which can contain a deadly toxin called tetrodotoxin. It is estimated that several dozens of deaths occur annually worldwide due to puffer fish poisoning.
Whether or not a tropical fish can survive in cloudy water depends on why the water is cloudy. If there has been a spike in ammonia or nitrates, it can be deadly to fish. Tropical species tend to be more sensitive to severe water changes than freshwater fish.
DEADLY fish
The stone fish
jelly fish
Deadly fish are fish that can cause death. Examples are the lionfish, scorpionfish, and many of the larger and more aggressive sharks.
The tuna fish is not at all deadly to humans. It is a staple of many people's diet throughout the world.
stone fish
Humans, Snake, animals
Piranha.
Fugu, which Japanese for Puffer Fish, can be quite deadly if any of the tetrodotoxin in the organs contaminates the meat during cleaning of the fish and/or during preparation of the meal.
Blow Fish is another name for Puffer Fish. They are poisonous but I believe in some specialist Japanese restaurants the fish is prepared by experts and eaten by the brave.
the snake is only deadly to fish, but not to humans. it will take allot of bites to in pulse venom to interact to humans ( like one billion bites to be deadly) and is less than one percent deadly to humans.
Neither Reptiles nor Amphibians should be kept with fish. They will poison the water for the fish making it deadly.