Indian & Bangladeshi cuisines are almost same. Esp. East Indian cuisines. Just a difference is we have an additional recipe called Beef curry which is not that common in India because of Hindu sentiments. Pork is not common in either India or Bangladesh but Bangladeshi Christians eat pork. So, Bangladeshis even though very tiny portions do eat pork also.
Since Bangladesh is a riverine country fish is almost a staple food. Its in almost every day recipe or minimum 4 / 5 days in a week we eat fish. Bengalis ad fish in most of 'veg' items.
Total veg items are not that common. We generally ad fish in veg items. A total vegetarian Bengali or Bangladeshi is extremely rare. Bangladeshis avoiding red meat are common but avoiding fish completely is very rare occurrence unless for health issues / allergy.
The most common veg item is 'Lentile light liquid soup. Its called 'Moshurer Dal or 'Patla Dal' means 'light liquid dal'
Indians have other type of dal (very thick dal) but Bangladeshi dal recipe is very light.
This daal is almost everyday recipe.
Other veg item is Shaak or leafy green. All types of Shaak is eaten regularly by Bangladeshis but most of the time we add small fish in it. Only Shaak bhaja or light fried leafy green is also consumed.
Most common is red spinach.
Green spinach is also common.
Niramish Torkari or Mixed Vegetable Curry is also a common recipe.
Dherosh Bhaji or Bhendi Bhaji / ladies finger recipe.