Here is the images of top 5 of them
1. তাইপান সাপ (Taipan snake ) :
(https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRZ8JZX1GANW0bnrBl7Zhi8kSkua6sEWjBRactIeBJ_-COBkpqLGg)
2. কমেন ক্রাইট (Common krait)
(https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcR86knW8x-l1Jbqs5OxfIihO3t1Zp3I1Q2koYRSFTl1CmlGFvyasA)
3. ফিলিপাইনি কোবড়া (Philippine cobra) :
(https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcSxvrs0MGy0LTEgInOfPqpVwuLFfGB1w8ZMhHI4M52jHgTchK3G)
4. কিং কোবড়া (king cobra) :
(https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcR5PG45U-_Y6LopuEAXEX7qDdklNxAxw9pQ_DYlFQXphoOQJB_S)
5. রুসেলস ভিপার (Russell Viper) :
(https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSHmq254jd3w1Yk6tlemb2lRyzXIIK9itswK8RLoZhcv0ZTGVytSA)