🐋no photo yet

No photo yet — browse the gallery for other animals.

SpeciesCetaceaLipotidae
Marine mammals

🐋Baiji

Lipotes vexillifer Miller, 1918

白鱀豚(學名:Lipotes vexillifer)也称白鳍豚,又訛作“白暨豚”,是中國特有的一种淡水鯨,曾分布于长江中下游水系与富春江,有“长江女神”“水中大熊猫”之称。分类位置一度存在争议,曾被视为亚河豚、恆河豚等其他淡水豚类的近亲,后经全面的形态学和遗传学研究,确认其自成一科,为古老的孑遗物种。 白鱀豚通常结成小群活动,捕食小型鱼类。性情羞怯,缺少丰富而顯见的生态行为,长久以来罕为人知,20世纪后半叶以来受工业和渔业发展的严重侵害而数量锐减,1988年被中國列入国家一级保护动物,但因经济建设与生态治理之间存在难以调和的矛盾,各类危害其生存的活动始终未能遏止。因长期未得到有效保护,白鱀豚种群的衰亡态势已不可挽回,被认为是长江动物群中伴随人类发展而产生的众多牺牲品的代表,也是首个由于人为因素而走向灭绝的鲸豚类动物。 白鱀豚在1918年便已被西方学者描述,但中国学界至1978年才正式对其开展研究工作,而活体白鱀豚在当时已十分罕见。1980年一头雄性幼豚在长江交接洞庭湖口处被渔民捕获,中国科学院水生生物研究所将其饲养并取名为“淇淇”,自此成为白鱀豚相关信息的重要来源。2002年7月14日“淇淇”死亡后再无确切的白鱀豚活体记录。2006年11月6日至12月13日,中科院水生所联合多個西方国家的科研机构,组成近40人的考察团进行为期六周的“2006长江淡水豚类考察”,最终未观测到任何白鱀豚,国际学界因此认定白鱀豚功能性灭绝。2007年以后零星的目击报告和影像资料显示白鱀豚可能还有残余个体,但已不足延续种群。

Text: Wikipedia, CC BY-SA 4.0.

Videos
None yet
Photos
None yet
Measurements
11
vs you
≈ 1.6× your weight
Also called
Chinese River Dolphin, Yangtze River Dolphin, Changjiang Dolphin, Chinese Lake Dolphin, Pei Chi, White Flag Dolphin, Whitefin Dolphin, Yangtse River Dolphin
Conservation status
CRCritically endangered

IUCN Red List assessment, 2017.

Population trendDecreasing
Key measurements
Body mass
98 kg
Body length
2.1 m
Shoulder height
not recorded
Top speed
not recorded
Bite force
not recorded
Maximum lifespan
24 years
All measurements ↓
Facts and figures

Everything we know about the Baiji

Typical adult figures. Where a value is an estimate rather than a measurement, it says so.

Body mass
98 kgrecord 135 kg · SeaLifeBase
COMBINE
Other figures ↓

Record: largest individual on record

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

By sex

  • Female240 kgSeaLifeBasev25.04SeaLifeBase populates Weight independently of Length; the two are not guaranteed to describe the same individual. Verify before publishing.

Figures vary

  • 84 kgAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: questionable
Body length
2.1 m
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

By sex

  • Female2.6 mSeaLifeBasev25.04

Figures vary

  • 2.3 mSeaLifeBasev25.04
Brain mass
558 g
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Maximum lifespan
24 years
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 24 yearsAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: questionable
Generation length
13 years
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Age at maturity
9.2 years
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Gestation
319 days
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 319 daysAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: questionable
Litter size
1
COMBINE
Other figures ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Figures vary

  • 1AnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: questionable
Trophic level
Carnivore
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Activity cycle
Diurnal
COMBINE
Details ↓

Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0

Volume l
98 Laverage
Details ↓

Body mass at ~1.0 kg/L, the density of vertebrate tissue.

average = a mean across sexes or species in a group.

Not recorded for Baiji yet: shoulder height, top speed, bite force.

More

More about the Baiji

Closest relative on this site
🐋 Amazon river dolphin — last shared an ancestor ≈ 11 million years ago.
What it eats
fish100%
In other languages
Chinesischer Flussdelfin (de), 白鱀豚 (zh), Lipotes vexillifer (es), Dauphin de Chine (fr), Baji chiński (pl), 양쯔강돌고래 (ko) … and 27 more languages
Videos

No videos of the Baiji yet.

We have 44,653 videos so far, and none of them features this animal yet.

All videos →
Tools

Compare the Baiji

Pick a tool — the Baiji is already selected.