The hottest pepper is image # 3!..the Serrano pepper.
The others are:
2nd Hottest - # 1 - Anaheim
Least Hottest # 2 - Bell Pepper
Now of course, there are even hotter peppers than that the serrano. Check out this chart with the heat rating scale.
Scoville Heat Ratings:
Pure capsaicin: 15,000,000 - 16,000,000
Pepper spray: 2,000,000 - 5,300,000
Naga Jolokia: 855,000 - 1,050,000
Red Savina Habanero: 350,000 - 580,000
Habanero Chili, Scotch Bonnet, Jamaican Hot Pepper, Datil pepper, Rocoto, African Birdseye, Madam Jeanette - 100,000 - 350,000
Thai pepper, Malagueta pepper, Chiltepin pepper, Pequin pepper: 50,000 - 100,000
Cayenne pepper, Aji pepper, Tabasco pepper, Chipotle pepper: 30,000 - 50,000
Serrano pepper (some Chipotle peppers): 10,000-23,000
Jalepeno pepper, Guajilo pepper, New Mexican Anaheim peppers, Paprika: 2,500 - 8,000
Anaheim pepper, Poblano pepper, Rocotillo pepper: 500 - 2,500
Pimento, Pepperoncini: 100 - 500
Bell pepper: 0
What do scientists say about YOUR personality if you like spicy food?
At a 2013 research convention, one group of scientists wanted to know if there is something unique about people who like spicy food.
The answer: People who like spicy food are also more likely to be risk takers.
Source: Institute of Food Technologists (IFT). (2013, July 17). Personality may predict if you like spicy foods. ScienceDaily. Retrieved April 12, 2014 frowww.sciencedaily.com/releases/2013/07/130717141722.htm