What kind of sentence is this. When we went to the aquarium, we saw bright and colorful fish, so we took lots of pictures.
This is a compound sentence.
The sentence you provided is a complex sentence.
The sentence you provided is a complex sentence.
To determine the type of sentence, we need to understand the structure and components of the sentence. In this case, we have two independent clauses joined together by the coordinating conjunction "so".
The first independent clause is "When we went to the aquarium, we saw bright and colorful fish". This clause functions as an introductory clause which provides context and sets up the situation.
The second independent clause is "we took lots of pictures", which is the main clause expressing the action that was taken as a result of seeing the bright and colorful fish.
By combining these two independent clauses with the coordinating conjunction "so", we create a compound sentence that shows a cause and effect relationship between the two actions.
So, to summarize, the sentence you provided is a complex sentence because it contains two independent clauses joined by a coordinating conjunction.