Wholesale seafood for professional kitchens Early-morning delivery across London, the South East and beyond
Responsible choices from vessel to menu

Sustainability

Practical seafood guidance shaped by seasonality, responsible sourcing, quota management and the realities of professional kitchens.

A practical, informed approach

Responsible seafood is about more than one label

Stock condition, seasonality, fishing method, catch area, quota, provenance and farming standards all influence whether a species is the right choice at a particular time.

Marrfish uses its fishing heritage, vessel relationships, market knowledge and daily supplier contact to help chefs understand what is fishing well, where availability may vary and when a suitable alternative deserves a place on the menu.

Red gurnard supplied by Marrfish
Look beyond the usual speciesBritish alternatives such as gurnard, coley, pollock, mackerel and cuttlefish can provide quality, value and menu interest.
What guides our advice

Six parts of a more responsible supply chain

Vessels and fishing methods

Understanding how seafood is caught, where it is landed and how fishing practices affect quality and selectivity.

Quota management

Using quota knowledge and flexibility to support responsible fishing and reduce avoidable pressure or discarding.

Seasonality

Encouraging menus to follow periods of better quality and availability rather than forcing the same species all year.

Responsible purchasing

Maintaining daily contact with boats, markets and trusted suppliers to understand current condition and provenance.

Responsible aquaculture

Selecting farmed seafood with consideration for husbandry, site management, feed and recognised standards.

Waste and efficiency

Improving yield, recommending appropriate preparation and reducing packaging and operational waste where possible.

Plan with the seasons

Use the calendar to make better menu decisions

The interactive calendar shows when individual species generally have good availability, when quality is at its best and when supply may be variable or out of season.

Search by speciesQuickly find a particular fish or shellfish.
Filter by categoryCompare round fish, flat fish, shellfish and more.
Explore alternativesOpen each species for flavour, substitute and price guidance.
Interactive menu-planning tool

Fish seasonality calendar

See when each species is at its best, when availability may vary and when choosing an alternative is recommended.

Good availability Varying availability Poor / out of season Best quality

Species
Talk to Marrfish

Plan a more flexible seafood menu

Ask the team what is currently landing well, which species are in prime condition and which alternatives could work for your kitchen.