Difference Between Marlin and Sailfish and Swordfish

马林鱼vs帆犬vsSwordfish

Marlin, swordfish, and sailfish are large fishes with long characteristic bills that highly resemble. Their characteristic shape with a sword-like snout and a large body make them unique among all the marine creatures. Therefore, they are colloquially known asBillfish。所有Billfish物种均以：Perciformes的顺序描述，但是本文打算讨论对区分它们很重要的有趣特征。

Sailfish

Sailfish are the two described species of the Genus: Istiophorus (Atlantic sailfish和印度太平洋帆犬）。有两种旗鱼是基于传统观察的事实，但是基于DNA和其他科学方法的最新描述倾向于描述两者在印度太平洋帆船下（I. platypterus). Sailfish grows about 120 – 150 centimetres in the first year and reaches the maximum at two years of age, by this time they are sexually matured. However, they do not exceed 3 metres in length, and the maximum bodyweight is usually 90 kilograms. Sailfish are agile swimmers (110 km/h), and are able to swim 100 metres in about 4.8 seconds. Their dorsal fin, the sail, is kept folded during swimming, but they raise it when excited. One of their remarkable abilities is to change their colour almost instantly. Sailfish can live only about four years in wild, but their short stint is highly interesting.

Marlin

马林鱼队是一群大型海洋鱼类，上面有大长矛状的钞票。大约有十种在三个属下描述的马林鱼Istiophorus,Makaira,和Tetrapturus。They belong to the Family: Istiophoridae of the Order: Perciformes. Depending on the species, marlins reach different body sizes ranging around 5 – 6 metres of length and 600 – 800 kilograms of weights. Their tubular shaped body slightly narrows towards the posterior end. Many of them have vertical stripes on their body except in black marlins. Their dorsal fin is directed upwards, pointed, and runs backwards along the dorsal edge up to more than 80 % of the body length. The pectoral fins are not clearly visible due to their large body size.

尽管体型较大，但马林鱼还是异常敏捷的游泳者，速度最高为每小时110公里。马林鱼拥有长寿（野外> 25年）的祝福，他们在两到四岁时达到了性成熟。

Swordfish

Swordfish, akaBroadbill，是一种大型迁徙鱼类，具有特征形状的鼻子或钞票。它在科学上被称为Xiphias gladius, belong to the Family: Xiphiidae of the Order: Perciformes, and there is only one species of swordfish in the world. Swordfish is usually three metres long, but some individuals can be more than four metres in length. The weight ranges usually around 500 – 650 kilograms for an adult, whereas males are smaller and lighter compared to females. It is not a laterally flattened body but round-shaped.

这些掠食性鱼可以快速游泳并且高度迁移。他们的背鳍看起来像鲨鱼鳍，胸鳍在身体下方延伸。剑鱼是一种屈光，但是它们具有毛细血管网络，当环境温度低至10时，可以保持眼睛加热⁰C. Thus, they have an improved vision to facilitate efficient predation. Swordfish can inhabit a range of habitats from surface to deep waters of both temperate and tropical seas. Their distribution could be described as worldwide as they are found in Indian, Pacific, and Atlantic oceans. Swordfish can start sexual reproduction when they are 4 – 5 years old and live about nine years in wild.

马林鱼vs帆犬vsSwordfish

Marlin	Swordfish	Sailfish
三个属中存在11种（Istiophorus,Makaira,和Tetrapturus)	单个物种 (Xiphias gladius)	Two species of one genus (Istiophorus)
Sexual maturity at 2 – 4 years of age	4至5岁的性成熟度	Sexual maturity at 2 years of age
Lifespan is >25 years in wild	Lifespan is about 9 years in wild	Lifespan in wild is around 4 years
平均长度5 - 6 m 平均weight 600 – 800 kg	Average length 3 – 4 m 平均weight 500 – 650 kg	Average length 2 – 3 m 平均weight is about 90 kg
Dorsal fin is directed upwards	Dorsal fin is directed backwards	Dorsal fin is a sail and directed upwards
平坦和尖的比尔	Narrow and pointed bill	Narrow and pointed bill
Vertical colour patterns are present	No vertical colour patterns	Vertical colour patterns are not prominent, but they are able to change the body colours instantly