How do I get rows from a list(table) in a protractor e2e test?

The list in question is a table generated by a reactive angular form which does not have a specific ID. Following code is used to generate the list in angular part.

<p-table id='paragraphList' *ngIf="paragraphsObs | async; else loading"
         [value]="paragraphsObs | async"
         selectionMode="single" (onRowSelect)="select($event)"
         scrollable="true">
  <ng-template pTemplate="header">
    <tr> ...header... </tr>
  </ng-template>
  <ng-template pTemplate="body" let-paragraph let-rowData>
    <tr [pSelectableRow]="rowData">
      <td width="15%"></td>
      <td width="10%"></td>
      <td width="31%"></td>
      <td width="11%">
      </td>
      <td width="11%"></td>
      <td width="11%">
      </td>
      <td width="11%"></td>
    </tr>
  </ng-template>
</p-table>

The corresponding table generated at the front-end has the following html source:

<p-table _ngcontent-c6="" id="paragraphList" scrollable="true" selectionmode="single" ng-reflect-selection-mode="single" ng-reflect-scrollable="true" class="ng-star-inserted" ng-reflect-value="[object Object],[object Object">
  <div class="ui-table ui-widget ui-table-hoverable-rows" ng-reflect-ng-class="[object Object]">
    <div class="ui-table-scrollable-wrapper ng-star-inserted">  
      <div class="ui-table-scrollable-view" ng-reflect-frozen="false">
        <div class="ui-table-scrollable-header ui-widget-header">...header...</div>
        <div class="ui-table-scrollable-body">
          <table class="ui-table-scrollable-body-table" ng-reflect-klass="ui-table-scrollable-body-table" ng-reflect-ng-class="[object Object]">               
            <tbody class="ui-table-tbody" ng-reflect-template="[object Object]">
              <tr _ngcontent-c6="" ng-reflect-data="[object Object]" class="ng-star-inserted">...</tr>
              <tr _ngcontent-c6="" ng-reflect-data="[object Object]" class="ng-star-inserted">...</tr>
               ...
            </tbody>
          </table>
          <div class="ui-table-virtual-scroller"></div>
        </div>
      </div>
    </div>
  </div>
</p-table>

I want to reach to those inner elements and get them as a list. I have tried using class names with element and all locators to get the elements but to no avail. Then I tried using tag names to reach to those elements but that too doesn't seem to work.

This following small snippet returns 0 for the count of elements that I try to obtain from the list.

element(by.id('paragraphList')).element(by.css('.ui-table-scrollable-body-table'))
  .all(by.tagName('tr')).count().then(function (result) {
  console.log(result);
});

Any help would be appreciated. Thanks