Correct

捕捞 vs 捞

/ bǔlāo vs lāo /
Strokes

Formula

1
近海捕捞 (inshore fishing)
2
捕捞业 (fishing)
3
捕捞技术 (fishing technology)

Definition

捕捞 and 捞 both are Verbs, which means [fish for; catch; drag for].

Example

捕捞 simply means "to fish for and drag aquatic animals and plants"; 捞 has a more complicated meaning: "to fish for, to acquire by improper means, etc".
In the two examples, both words mean "to fish for" and so are interchangeable.
1
Zhè
wèi
mín
渔民
jīntiān
今天
lāo
捕捞
  
(
lāo
  
)
dào
shǎo
不少
  

The fisherman caught a lot of shrimps today.

2
Yóu
由于
渔业
yuán
资源
shēng
发生
wèn
问题
  
,
zuìjìn
最近
zhè
这里
lāo
捕捞
  
(
lāo
  
)
dào
duōshǎo
多少
le
  

Due to the problem of fishery source, less fish can be caught here recently.

捕捞 is more literary, 捞 cannot be so used.
近海捕捞 (inshore fishing) 捕捞业 (fishing) 捕捞技术 (fishing technology)
3
Zhèxiē
这些
mín
渔民
cóngshì
从事
jìnhǎi
近海
lāo
捕捞业
  

These fishermen are mainly engaged in offshore fishing.

4
Yóu
由于
lāo
捕捞
shù
技术
de
gāo
提高
  
,
渔业
yǒu
hěn
de
zhǎn
发展
  

Owing to the improvement of fishing technologies, the fishery has developed greatly.

捞 has other usages.
5
yòng
xínghuì
行贿
děng
fēi
非法
shǒuduàn
手段
  
,
lāo
le
shǎo
不少
zhèngzhì
政治
běn
资本
  

He got quite a lot of political capital. (used figuratively)

6
Zhè
jiāhuo
家伙
dāngguān
当官
lāoqián
捞钱
lāo
de
tài
hai
厉害
  
,
bèi
pàn
le
xíng
  

The guy was too much to make money by abusing his official position, and was finally sentenced to the imprisonment. (to acquire through unlawful means)

7
yòng
利用
zhí
职务
  
,
zhè
nián
lāo
le
shǎo
不少
hǎochu
好处
  

She has made a killing these years. (to acquire through unlawful means)

8
Zhāng
张大妈
zhēng
cóng
yóuguō
油锅
zhá
hǎo
de
lāo
chūlái
出来
  

Grandma Zhang is taking the fried fish out of the oil wok. (to fish for sth. from liguid)

9
de
jièzhi
戒指
xiǎoxīn
小心
diào
dào
xiǎo
shuǐgōu
水沟
le
  
,
fèi
le
shǎo
不少
jìnr  
劲儿
cái
lāo
chūlái
出来
  

Due to carelessness, her ring dropped into the small drain. It took her great efforts to take it out. (to fish for sth. from liguid)

Mistake

捞 has other usages