my boyfriend has recently found out that he has a low sperm count is there any types of food example fish that can help boost the count?

A few tips - first he should be taking a good multivitamin every day.

To avoid excess chemicals,
Avoid plastic containers for food storage, plastic bottles, wraps and utensils.
Use office paper products whitened without chlorine.
Use only non-bleached coffee filters, paper, napkins and toilet tissue to reduce dioxin exposure.
Avoid chlorinated tap water, chlorine bleach and other chlorinated products; use hydrogen peroxide as an alternative.
Eat organic food as much as possible to avoid pesticides and herbicides.
Avoid synthetic deodorants and cosmetics; use only organic products whenever possible.
Avoid animal products with a high fat content that contain hormones, especially conventional milk and dairy products, chicken, beef and pork.
Avoid alcohol and caffeine.
Avoid fried, charcoal-broiled or barbecued forms of cooking.
Eat lots of foods high in antioxidants (carotenes, vitamins A, C, E and selenium) such as green leafy vegetables, kale, carrots, citrus, broccoli, cauliflower and yams.