It does make sense to factor in and use the symbols that are generally used in a specific industry when designing a new logo. The beholders will immediately associate it with that industry.

These symbols may be modified and re-used or combined with new elements. You could also just use parts of these symbols for your new logo.

The best way to find symbols typical for an industry is to examine the rival business' logos.

A good example for a branch typical symbol is an abstracted car or car parts for automobile repair workshops. Plants, water and plant parts like leaves or flowers are frequently found in garden centre logos. Aquaristics speciality shops and manufacturers of aquaristics accessories often use stylized aquatic plants or fish.

These branch typical symbols are always in close connection to the product or service offered by the companies / shops.